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QUESTION 1.
Element X on Planet Qatar has three known isotopes: X-121 with a relative abundance of 43.2%, X-123 with a relative abundance of 53.1%, and X-129 with a relative abundance of 3.70%. What is the average atomic mass in amu of Element X given this information?

QUESTION 2.
How did Rutherford's experiment change the way scientists had previously viewed atomic structure? How did this pave the way for subsequent changes up to and including the currently accepted quantum mechanical atomic model?

QUESTION 3.
How is percent abundance related to average atomic mass?

Answers

Answer 1

Answer 1

The average atomic mass in a.m.u of Element X given this information is 122.358.

Answer 2

Rutherford's experiment change the way scientists had previously viewed atomic structure as it provided insight into atomic structure.

Rutherford's experiment paved the way for subsequent changes up to and including the currently accepted quantum mechanical atomic model as his  model of the atom, the structure of the nucleus became more well-defined following the discovery of protons (1919) and neutrons (1932) as the particle constituents of the nucleus.

Answer 3

The percent abundance is related to the number fraction as fi = Pi/100  and used as in the formula written above in order to find average mass

What is atomic structure?

Atomic structure refers to the structure of an atom comprising a nucleus (centre) in which the protons (positively charged) and neutrons (neutral) are present.

The average atomic mass in a.m.u of Element X given this information is ((121 * 43.2) + (123 * 53.1) + (129 * 3.70)) / 100

=5227.2 + 6531.3 + 477.3

=12235.8 / 100

122.358

Rutherford's experiment change the way scientists had previously viewed atomic structure as it provided insight into atomic structure, and Rutherford's model of the atom was proposed as a small, positive, massive nucleus contains the very vast majority of the mass of the entire atom with negatively charged electrons surrounding it at relatively large distances.

Rutherford's experiment paved the way for subsequent changes up to and including the currently accepted quantum mechanical atomic model as his  model of the atom, the structure of the nucleus became more well-defined following the discovery of protons in 1919 and neutrons in 1932 as the particle constituents of the nucleus.

It was during the 1920s that a "wave mechanical model" came along through the work of several physicists most importantly de Broglie, Heisenberg, and Schrodinger) and Bohr's concept of electrons "orbiting" the nucleus was abandoned in favor of "orbitals" which are more abstract probabilistic representations of electronic structure within an atom.

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Related Questions

How does a conjugate acid differ from its conjugate base?

Answers

The conjugate acid is differ from its conjugate base as, conjugate acid is formed by strong base whereas conjugate base is formed by strong acid.

conjugate base is differ from conjugate acids by the presence of the proton. The conjugate acid is formed when proton is added to the bases whereas conjugate bases is formed when proton is released by the acids.

Example of corrugate acids are given below.

[tex]NH_{3}[/tex] → [tex]NH_{2} ^{-} +H^{+}[/tex]

In the above example  [tex]NH_{2} ^{-}[/tex] is conjugate acids.

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The volume of a gas decreases to half of its original volume, but the gas maintains the same number of moles and temperature. According to the ideal gas law, what will most likely happen to the pressure?

It will double.
It will decrease.
It will increase slightly.
It will remain the same

Answers

A. when the volume of the gas is halved, the pressure of the gas will be doubled.

Pressure of the gas according to ideal gas law

PV = nRT

P = nRT/V

when the volume is halved

P= nRT/0.5V

P = 2nRT/V

P(new) = 2P(initial)

Thus, when the volume of the gas is halved, the pressure of the gas will be doubled.

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A solution is prepared by dissolving 117 grams of salt (NaCI) in 250 milliliters of water (H_{2}*O) What is the molarity of the solution?

D. 468 M NaCI

C. 8.0 M NaCl

A. 0.47 M NaCI

B. 8 * 10 ^ - 3 * MNaCl

Answers

Taking into account the definition of molarity, the molarity on the solution is 8 M.

Definition of molarity

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

[tex]Molarity=\frac{number of moles}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{L}[/tex].

This case

In this case, you know that:

number of moles= 117 gramsx[tex]\frac{1 mole}{58.45 grams}[/tex]=  2 moles, where 58.45[tex]\frac{g}{mole}[/tex] is the molar mass of NaCl.volume= 250 mL= 0.250 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

[tex]Molarity=\frac{2 moles}{0.250 L}[/tex]

Solving:

Molarity= 8 [tex]\frac{moles}{L}[/tex]= 8 M

Finally, the molarity on the solution is 8 M.

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What is the total number of electron domains around the central atom for a molecule having a trigonal pyramidal molecular geometry, such as nh3?

Answers

The total number of electron domains in molecules having trigonal pyramidal molecular geometry is four (4). It contains three bonding and one nonbonding pair.

Ammonia has an sp3 hybridization and stable binary hydride. And it has an electron geometry of tetrahedral. Its bond angle is 107 degrees.

If all are bonded pairs then the geometry is tetrahedral but if there is one lone pair of electrons & 3 bond pairs then the geometry is trigonal pyramidal.

The ammonia molecule has 3 hydrogen atoms and an unshared pair of electrons connected to the nitrogen atom that's why its shape is trigonal pyramidal.

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The iron atoms in the prosthetic groups of the electron transport chain proteins can easily accept and release ____

Answers

The iron atoms in the prosthetic groups of the electron transport chain proteins can easily accept and release electrons

A helper molecule, or prosthetic group, is a nonproteinaceous substance that aids in the activity of an enzyme. A particular type of cofactor molecule, or organic molecule, known as a coenzyme, aids enzymes in catalyzing chemical reactions.

a prosthetic group made comprised of a protoporphyrin ring and an iron (Fe) atom in the middle. Four pyrrole rings joined by methene bridges form a protoporphyrin ring.

Through their involvement in cellular respiration and fatty acid production, prosthetic groups support cellular activity. Holoproteins are the name for prosthetic groups that are attached to proteins. Prosthetic groups include, among others, heme, biotin, flavin, iron sulfides, copper, and ubiquinone.

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How much energy does cameron need to add to raise the temperature of a 0.500-kg sample of silver from 200 k to 205 k? the specific heat of silver is 236 j/kgk

Answers

energy to raise temperature is 590 J

Given:

mass of silver sample = 0.5 kg

initial temperature = 200 k

final temperature = 205 k

specific heat of silver = 236 j/kgk

To Find:

energy to raise temperature

Solution: The heat energy required to raise the temperature of of a substance through is called its specific heat capacity.

Q = cmΔt

where c= constant of proportionality, called specific heat capacity of the body

Q = mass x specific heat x ∆t

= 0.5 x 236 x ( 205-200 )

= 590 J

So, energy to raise temperature is 590 J

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Which compares the problems associated with radioactive waste created from generating electricity using fusion reactions to waste created from generating electricity using fission reactions?

Answers

Radioactive waste from fusion reactions becomes less hazardous much sooner than waste from fission reactions, nuclear fusion is much safer than fission because it leaves no radioactive waste behind.

What is the difference between the two reactions?

Both processes are natural, but they can also be carried out in a lab. While fusion involves the "crushing" of two atoms to form a single atom of a new element, fission involves the splitting of an atomic nucleus.

We can conclude from this information that radioactive waste from fusion reactions becomes less hazardous much sooner than waste from fission reactions, and nuclear fusion is much safer than fission because it produces no radioactive waste.

Why does nuclear fission release more energy than other chemical reactions?

It takes a lot of energy to combine protons so that nuclear forces can overcome electrostatic repulsion. The energy released during the fission process is much greater than the energy released during other chemical reactions.

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Answer: The radioactive waste from fusion reactions becomes less hazardous much sooner than the waste from fission reactions.

Explanation:

Given the reaction below, which is the being oxidized?
Mg + Cl2 Right arrow. Mg2+ + 2Cl–
2CI–
CI2
Mg
Mg2

Answers

The ion that is oxidized in the above redox reaction is Mg (option A). Details about oxidation can be found below.

What is oxidation in a redox reaction?

Oxidation in a redox reaction is a reaction in which the atoms of an element lose electrons and the oxidation state of the element increases.

According to this question, the redox reaction is given as follows: Mg + Cl2 = Mg2+ + 2Cl–

As shown in the above redox reaction, Magnesium oxidation number increases from 0 to 2+, therefore, is the one being oxidized.

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AnswerAAAAA

Explanation:

Please help! Is there another way that 3.40x10^-19J can be imputed on a computer. I have the right answer but it is wrong.

An element emits light at a wavelength of 584 nm. What is the energy of the photon with that wavelength?

Write your answer in scientific notation with the appropriate significant figures and unit. The exponent of 10 is written with the carat (^) symbol, so 10^n.

Answers

The energy of the photon with the wavelength of 584 nm is 3.4×10¯¹⁹ J

How to determine the frequency of the photonWavelength (λ) = 584 nm = 584×10⁻⁹ mSpeed of light (v) = 3×10⁸ m/sFrequency (f) = ?

f = v / λ

f = 3×10⁸ / 584×10⁻⁹

f = 5.14×10¹⁴ Hz

How to determine the energyPlanck's constant (h) = 6.626×10¯³⁴ JsFrequency (f) = 5.14×10¹⁴ HzEnergy (E) =?

E = hf

E = 6.626×10¯³⁴ × 5.14×10¹⁴ Hz

E = 3.4×10¯¹⁹ J

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Which describes the law of conservation of matter?
O A. Chemical reactions cannot happen.
B. Atoms cannot be created or destroyed in a reaction.
OC. Atoms are not involved in chemical reactions.
OD. Molecules cannot change into other molecules during a reaction.
SUBMIT

Answers

Answer:

answer is B

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If an object has a temperature of 0 kelvin, how much energy is the object emitting? what is the wavelength of light emission according to wien's law?

Answers

This law (expressed mathematically as E = σT4) states that each gadget with temperatures above absolute zero (0K or -273°C or -459°F) emits radiation at a charge proportional to the fourth energy in their absolute temperature.

Wien's displacement law states that the black body radiation curve for one-of-a-kind temperatures height at a wavelength is inversely proportional to temperature.

Wien's displacement law It states that the better the temperature, the lower the wavelength λmax for which the radiation curve reaches its most. The shift to shorter wavelengths corresponds to photons of better energies. In other phrases, λmax (height wavelength) is inversely proportional to temperature.

Wien's regulation, named after the German Physicist Wilhelm Wien, tells us that gadgets of different temperatures emit spectra that height at distinctive wavelengths. hotter objects emit radiations of shorter wavelengths and for this reason, they seem blue.

Wien's regulation tells us that gadgets of various temperatures emit spectra that top at specific wavelengths. hotter gadgets emit a maximum of their radiation at shorter wavelengths; subsequently, they will seem like bluer. Cooler gadgets emit most of their radiation at longer wavelengths; consequently, they'll appear redder.

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Alkenes are an example of unsaturated hydrocarbon that are more reactive than saturated hydrocarbons because it contains double bonds which can break and compounds can react with hydrogen.

Answers

Yes. Unsaturated hydrocarbon are more reactive than saturated hydrocarbons because it contains double bonds which can break and compounds can react with hydrogen.

Due to the double and triple bonds between carbon atoms in unsaturated hydrocarbons, which are weaker than the single bonds in saturated hydrocarbons due to the presence of weaker pi bonds, these unsaturated hydrocarbons are more reactive than single bonded carbon compounds and react more quickly when used in reactions.

For example, unsaturated hydrocarbons are used to make paint, lubricants, and insecticides, among other industrial products. They are utilised in numerous chemical reactions because they are reactive.

Therefore, Unsaturated hydrocarbon are more reactive than saturated hydrocarbons.

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A gas diffuses 1/8 times faster than hydrogen gas. what is the molar mass of the gas?
129.02 g/mol
136.44 g/mol
140.81 g/mol
145.45 g/mol

Answers

Answer:

129.02 g/mol.

Explanation:

We apply grahams law of diffusion:

1/8 = √2.016/√m     where m = molar mass

√m  = 8√2.016

m =   (8√2.016) = 129.02 g/mol.

Given the following equation: 2 AgNO3 CaCl2 --> 2 AgCl(s) Ca(NO3)2 What is the net ionic equation:

Answers

The net ionic equation is:

2Ag⁺(aq) + 2Cl⁻(aq) → 2AgCl(s)

How to write a net ionic equation?

The given equation is:

2AgNO₃ (aq) + CaCl₂ (aq) → 2AgCl(s) + Ca(NO₃)₂ (aq)

A double displacement reaction occurs when silver nitrate and calcium chloride are combined. Silver chloride precipitate and a calcium nitrate solution are the results of the reaction.

Break down all the soluble electrolytes, that are present in an aqueous form, into their respective ions:

2Ag⁺(aq) + 2NO³⁻(aq) + Ca²⁺(aq) + 2Cl⁻(aq) → 2AgCl(s) + Ca²⁺(aq)+ 2NO³⁻(aq)

Now remove all the spectator ions present in the equation. The spectator ions should be removed after comparing the reactant and product sides of the revised reaction. These dissolved ions are known as spectator ions if they exhibit the same form on both sides. No reaction occurs if everyone is a spectator ion.

Now write the net ionic equation:

2Ag⁺(aq) + 2Cl⁻(aq) → 2AgCl(s)

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To a 25.00 mL volumetric flask, a lab technician adds a 0.225 g sample of a weak monoprotic acid, HA , and dilutes to the mark with distilled water. The technician then titrates this weak acid solution with 0.0849 M KOH . She reaches the endpoint after adding 42.35 mL of the KOH solution. Determine the number of moles of the weak acid in the solution.

Answers

The number of moles of the weak acid in the solution is 0.00359

Calculation:

1. The number of mole of KOH in the solution:

Given:

Molarity of KOH = 0.0849 M

Volume = 42.35 mL = 42.35 / 1000 = 0.04235 L

Mole of KOH = Mole = Molarity x Volume

                      = 0.0849 ×  0.04235

                      = 0.00359 mole

2. The number of mole of a weak acid, HA:  

Balanced equation:

HA + KOH → KA + H₂O

From the above equation, A mole of HA and a mole of KOH react together. Therefore,

0.00359 moles of HA will also react with 0.00359 moles of KOH.

0.00359  moles of base use = 1/1 x 0.00359 = 0.00359 moles of HA

Thus, there are 0.00359 moles of a weak acid in the solution.

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Why is it difficult to see whether you have added the phenolphthalein to the flask solution before you have titrated it? ​

Answers

Whether in an alkali (pink) or an acid (colorless) solution, the phenolphthalein indicator has one of two distinct structures. Both structures are light-absorbing in the ultraviolet spectrum, which the human eye cannot see. So it is challenging.

What is phenolphthalein? The phthalein family of chemical compounds includes the indicator phenolphthalein (C20H14O4). The powder is a thin, crystalline yellowish-white to light orange powder. It has a pKa of 9.3, is barely soluble in water, and, when dissolved in alcohol, is used as an indicator for acid-base titration investigations.It is colorless in liquid form until pH 8.5 when it transforms from pink to dark red. Adolf von Baeyer, a German chemist, created phenolphthalein in 1871. He produced it by fusing phenol and phthalic anhydride in the presence of sulfuric acid (H2SO4) or zinc chloride. Phenolphthalein is closely linked to the triphenylmethane dyes (ZnCl2). The abbreviation "HIn" or "php" in shorthand notation is frequently used to refer to the chemical compound phenolphthalein, which has the formula C20H14O4. Its structure consists of 2 alcoholic groups, one ketone group, three hexagonal structures, and one pentagonal structure. Another compound with carbon, hydrogen, and oxygen chain structure is phenolphthalein.Phenolphthalein is frequently used as an indicator in acid-base titrations. Due to its water solubility, phenolphthalein is frequently dissolved in alcohols before use in experiments. It is a weak acid that can lose H+ ions in solutions. While the ion of phenolphthalein is purple, the phenolphthalein molecule is colorless.A common indicator used in titration experiments to show the titration's endpoint is phenolphthalein, an inert, colorless acid. Since this molecule dissociates to generate pink anions when dissolved in water, the endpoint is signaled by the production of pink color.

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Write a mechanism for the formation of triphenylmethanol from the reaction of phenylmagnesium bromide and diethyl carbonate..

Answers

Nucleophilic acyl substitution reaction is the mechanism for the formation of triphenylmethanol from the reaction of phenylmagnesium bromide and diethyl carbonate.

Phenyl magnesium bromide substitutes one ethoxide ion in the nucleophilic acyl substitution reaction that drives the process forward. A subsequent equivalent of phenyl magnesium bromide produces triphenyl methanol through a nucleophilic addition reaction with the resultant keto group.

There are two ethoxy leaving groups in diethyl carbonate. Tertiary alcohol is created when diethyl carbonate combines with too much Grignard reagent. The Grignard reagent attacks the carbonyl carbon three times in the mechanism to produce the tertiary alcohol.

Therefore, Nucleophilic acyl substitution reaction is the mechanism for the formation of triphenylmethanol from the reaction of phenylmagnesium bromide and diethyl carbonate.

Refer to the image below for a better understanding of the mechanism;

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Which term describes the amount of pressure each gas in a mixture contributes to the overall gas pressure?

Answers

The term would be partial pressure.

What is the partial pressure of gases?

The partial pressure of a gas refers to the amount of pressure contributed by the gas to the overall pressure of a non-reacting gas mixture.

For example, if a gas is formed from a mixture of two gases A and B. The pressure of the gas would be the sum of the pressure of A and that of B. The pressures that A and B contribute to the overall pressure of the gas are called the partial pressures of A and B respectively.

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an iron weighing 50 grams absorbs 256.0 J of heat and warms by 11.4C What is the specific heat of the iron can

Answers

The specific heat of the iron can is determined as 0.449 J/g⁰C.

Specific heat of the iron can

The specific heat of the iron can is calculated as follows;

Q = mcΔθ

c = Q/mΔθ

where;

Q is quantity of heatΔθ is change in temperaturem is mass

c = 256/(50 x 11.4)

c = 0.449 J/g⁰C

Thus, the specific heat of the iron can is determined as 0.449 J/g⁰C.

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What effects doing adding a solute have on the freezing point of the freezing point of a solution

Answers

Answer:

Lowers the freezing point

Explanation:

Lowers the freezing temp

"Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent. The freezing points of solutions are all lower than that of the pure solvent and is directly proportional to the molality of the solute."

Answer: The temperature at which the solution freezes is lowered

Explanation:

The formation constant for the reaction ag (aq) 2nh3(aq) ag(nh3)2 (aq) is kf = 1.7 × 107 at 25°c. what is δg° at this temperature? (r = 8.314 j/k• mol)?

Answers

The value of ΔG° at this temperature is -18034.18 J/mol

Calculation,

Given information

formation constant (Kf)= 1.7 × [tex]10^{7}[/tex]

Universal gas constant (R) = 8.314 J/K• mol

Temperature = 25° C = 25 °C + 273 = 300 K

Formula used:

ΔG° = -RT㏑Kf

By putting the valur of R,T, Kf we get the value of ΔG°

ΔG° = - 8.314 J/K• mol×300K㏑ 1.7 × [tex]10^{7}[/tex]

ΔG° = -2494.2㏑ 1.7 × [tex]10^{7}[/tex] = -18034.18 J/mol

So, change in standard Gibbs's free energy is -18034.18 J/mol

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Use the portion of the periodic table shown below to answer the questions.

A portion of the first three columns of the periodic table is shown. Column one from top to bottom reads 11 sodium 22.990, 19 potassium 39.098, and 37 rubidium 85.468. Column two reads 12 magnesium 24.305, 20 calcium 40.078, and 38 strontium 87.62. Column three reads 21 scandium 44.956 and 39 yttrium 88.906.

Part 1: Name two elements that have the same properties as sodium (Na). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of calcium (Ca). Explain how you determined your answer using complete sentences. (6 points)

Answers

The two elements that have the same properties as sodium are potassium  and rubidium .

What is periodic table?

The periodic table is an arrangement of the elements in order of increasing atomic number.

From the list, the two elements that have the same properties as sodium are potassium  and rubidium .

Proton has an atomic number of 20 and a mass number of 40. The number of electrons is the same as the number of protons. Given that the atomic number is the number of protons present, we have 20 electrons and 20 protons.

Number of neutrons = Mass number  - Number of protons

= 40 - 20 = 20 neutrons

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Board cases involving eligibility or disciplinary issues that are resolved through a board agreed order

Answers

Board instances involving eligibility or disciplinary issues that are addressed by a board-approved order public records and accessible on the BON's web page.

BON's web page

Board Position Statements are a way to give nurses guidance on topics that are important to the Board and relate to the safety of the public, but they do not have the legal force of law. In the context of the position statement's overall intent, each position statement is intended to offer direction. Board position statements are examined every year to determine their applicability and accuracy in light of current practice, the Nursing Practice Act, and Board regulations. In January 2022, the Board conducted its most recent evaluation.

It is possible to find a concise summary of the substance of the Position Statements, although it does not include all the specifics that are included in each Position Statement.

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A 25. 00 ml sample of acetic acid containing phenolphthalein indicator is titrated with 0. 1067 m naoh. The solution changes color after 30. 07 ml naoh has been added. What is the concentration of the acetic acid before titration?.

Answers

The concentration of acetic acid:

The concentration of the acetic acid before titration is 0.128 M

What is titration?

Titration is a quantitative analytical procedure that works by allowing a known analyte to gradually react with a titrant until an endpoint is reached.

Titration for weak acid and strong base:

Moles of acetic acid =  moles of NaOH

Given:

Concentration of NaOH = 0.1067 M

Volume of NaOH = 30.07 ml = 0.03007 L

Calculation:

So, by using the formula, Concentration = Moles/Volume

Moles of NaOH = concentration x volume = 0.1067 x 0.03007 = 0.0032

Therefore, the moles of acetic acid  = 0.0032 mole

Now, using the formula again for determining the concentration of acetic acid, we get,

Concentration = Moles/Volume

Concentration of acetic acid =  0.0032/0.025 = 0.128M

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In terms of the kinetic molecular theory, in what ways are liquids similar to solids? in what ways are liquids different from solids?

Answers

Answer:

particles in liquids have greater kinetic energy than particles in solids

In 1869, mendeleev created a periodic table in which elements were ordered by weight and placed in groups based on their chemical properties. mendeleev's decision to design the periodic table in this way allowed immediate advances in chemistry by.?
a.) providing an explanation for the reactive properties of the alkali metals
b.) providing a framework for models of electron configurations
c.) predicting the existence of a group of undiscovered inert gases
d.) predicting the properties of undiscovered elements in specific atomic weight ranges.
please explain

Answers

Answer:

D

Explanation:

Mendeleev periodic table predicted the properties of undiscovered element like the eka-aluminium.

Please help!
how many moles of oxygen react
with 2.25 mol of nitrogen?
n2(g) +
o2(g)
no(g)

Answers

Answer: 2.25

Explanation: 1:1 mole ratio seen in equation.

4- The equilibrium constant for the reaction A (g) B (g) is 10. A reaction mixture initially contains [A]

Answers

The initial concentration in the reaction mixture will contain [A] = 0.1 M and [B] = 1.0 M

Below is the reaction

A(g) → B(g)

And the equilibium constant will be explained in terms of [A] and [B]:

Keq = 10 = [B]/[A]

If the first conditions are that [A] = 1.1 M and [B] = 0.0 M, the conditions at equilibrium is:

[A] = 1.1M - x

[B] = 0.0M + x

Now we rewrite Keq:

Keq = 10 = [0.0 +x] / [1.1 -x]

at the end we got it  for x:

10 = [0.0 +x] / [1.1 -x]

10 * (1.1-x) = x

11 - 10x = x

11 = 11x

x = 1

equilibrium, the concentrations are:

[A] = 1.1 M - 1 = 0.1 M

[B] = 0.0 M + 1 = 1.0 M

Thus, the concentration of A is 0.1 M and the concentration of B is 1M.

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An increase in __________ will directly stimulate the peripheral chemoreceptors to increase ventilation.

Answers

An increase in pH will directly stimulate the peripheral chemoreceptors to increase ventilation.

Chemoreceptor can be stimulated by change in the chemical composition of their immediate environment .There are many types of chemoreceptor spread throughout the body which help to control different process including taste, smell and breathing. An increase in body temperature increases the rate from peripheral chemoreceptor neurons.

The chemoreceptor is also known as chemosensor. The chemoreceptor is a specialized sensory receptor which transduces a chemical substance ( endogenous or induced ) to generate a biological signal. The two types of chemoreceptor is peripheral and central.

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Tim would like to know the mass of two boxes. Instead of Tim looking at the boxes to determine their mass, what should Tim use to accurately
determine the mass of each box

Answers

Answer:

The triple beam balance

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Which word does not belong with the other A TAPE B TWINE C CORD D YAM 3 3/5 divided by 1/2 What are the two main reasons for bank failure? Exfoliation is a process in ______. A. chemical weathering. B. biological weathering. C. mechanical weathering. D. None of these. Last month you spent $30 on clothing. This month you spent 130% of what you spent last month. Set up a proportion to model this situation. How much did you spend this month? She fixed him with a look that burned in silence. What literary craft is this? What role did colonist play in the seven years war? Considering Advantages and Disadvantages The American Revolution inspired independence movements in Latin America. According to the third excerpt, however, does Bolvar think that it would be advantageous to use the United States as a model for Venezuelas government? Explain please. Source: Primary and Secondary SourcesActivity netw rksSimn Bolvar, An Address of Bolvar at the Congress of Angostura (February 15, 1819) The square below represents one whole.What percent is represented by the shaded area? Which table shows a proportional relationship between x and y? Responses x 3 9 10 15 y 1 3 4 5x 3 9 10 15 y 1 3 4 5 , x 2 3 5 6 y 3 4 7 9x 2 3 5 6 y 3 4 7 9 , x 1 5 8 10 y 15 75 120 150x 1 5 8 10 y 15 75 120 150 , x 4 6 8 10 y 6 8 10 12 PLEASE I NEED HELP I NEED HELP NOW!!!!!!!!! Which of the following statements is TRUE? Recurring expenses don't need to be planned for because they rarely happen. Recurring expenses are expenses that can never be stopped. Recurring expenses should be planned for after looking at your wants. None of the above hi can someone please help with this im confused by the graph. helpppp please help me estimate 437.184 Madison is writing essays to send in with her college applications. Which of the following should she include to make the best impression?O a story about going on a trip to visit the college with her friendsOa story about how she was recognized for being best dressed in her classa story about how she spends time helping her grandmother on the weekendsa story about how important it is that she goes to the same college as her brother Marrow Thieves. Having read to p. 68: how is the group looking out for one another? Be specific. What are the methods of solving a quadratic equation for Class 10? X-rays produced in the dentist's office typically have a wavelength of 0.30nm .What is the frequency of these rays? f=_______Hz How do you calculate marginal cost and marginal revenue? Who is Iroquois in the world on the turtle's back? In AGHI, g = 9.6 inches, m/I=80 and m/G=15. Find the length of h, to thenearest 10th of an inch.