The final temperature of the mixture is 218.1°C.
The Specific Heat of gold 0.0123 J.
What is specific heat ?Specific heat is known to be the amount of energy required to raise the temperature of a unit mass of a substance by 1 degree. It is a physical property of matter, usually expressed in units of Joules/Kilograms/Kelvin (J/kgK).
Mass of gold = 325 g
Heat absorbed by water = mass of gold x specific heat x temperature change
325 x 0.128 x 405
Heat absorbed by water = 154,400 J
Heat capacity of water = mass of water x specific heat
200 x 4.184
Heat capacity of water = 836.8 J/degree Celsius
Final temperature = (heat absorbed by water ÷ heat capacity of water) + Initial temperature
Final temperature = (154400 ÷ 836.8) + 22
Final temperature = 218.1°C
Q = mcΔT
836.8 J/°C = 325 × c × (427°C - 218.1°C)
836.8 J/°C = 325 × c × 208.9
c = 836.8/(325 × 208.9)
c = 836.8/67,892.5
c = 0.0123 J
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Frida wants to measure the volume of a stone. She starts by pouring 473 mL of water into a large measuring cup. Then she drops in the stone. Now the water measures 499 mL. What is the volume of the stone
Frida wants to find the volume of a stone by measuring the change in water volume before and after the stone is added. the volume of the stone is 26 cm³.
Frida wants to find the volume of a stone by measuring the change in water volume before and after the stone is added. She fills a measuring cup with 473 mL of water and drops the stone in, causing the water level to rise to 499 mL. Using the conversion factor that 1 mL = 1 cm³, the initial volume of water is 473 cm³ and the final volume of water is 499 cm³. By applying the equation [Volume of stone] + [Initial water volume] = [Final water volume],
substituting the values
⇒ xcm3 +473cm3 = 499cm3
xcm3 =499cm3 −473cm3
xcm3 =26cm cube
the volume of the stone can be determined to be 26 cm³.
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In the last minute rush to assemble the demonstration, your teacher spills the lead chloride all over their sandwich and is left with 57.2 grams in the bottle. How much potassium iodide should be weighed out to convert all of the lead chloride to product?
Answer: Magnesium is being oxidized, and the chloride ion is being reduced. ... solutions of the reactants lead(II) nitrate and potassium iodide.
Explanation:
The boiling point of acetone is 50.5°C, while the boiling point of water is 100°C. Bringing a solution made of water and acetone to which of the following temperatures would allow the separation of these two liquids?
The temperature must be greater than 50.5°C and less than 100°C.
What is temperature ?
Temperature is a physical property that is used to measure the average kinetic energy of particles in a system, such as a gas, liquid, or solid. It is measured in units of degrees on the Celsius, Fahrenheit, or Kelvin scales.
Temperature is related to the average kinetic energy of particles in the system, and is affected by the number of particles, their mass, and the strength of their interactions.
Which temperature range is typical?
Core temperature is 98.6 F on average (37 C). However, the average body temperature might be anywhere from 97 F (36.1 C) to 99 F (37.2 C) or higher. Depending on the period of year or how busy you are, your body temperature may change. In general, elderly people's temperature are lower than those of younger people.
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What is the molecular formula of a compound whose empirical formula is CH4 and has a molar mass is 32. 086 g/mole?
The molecular formula of a compound whose empirical formula is CH4 and has a molar mass is 32. 086 g/mole is C
The molecular formula of a compound is the actual number and types of atoms that make up a molecule. It gives the exact number of atoms of each element in a molecule.
On the other hand, the empirical formula of a compound represents the simplest whole number ratio of atoms that make up a compound. It gives the lowest whole number ratio of atoms of each element in a molecule.
Multiply the subscripts in the empirical formula by a factor needed to reach the molar mass of the compound. In this case, CH4 has a molar mass of 16.04 g/mol and the compound has a molar mass of 32.086 g/mol.
32.086 g/mol/16.04 = 2
Multiplying the subscripts by 2, the molecular formula of the compound is C2H8.
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What information does the percent composition of an atom in
a molecule give?
The relative number of atoms one element
contributes to a molecule
B. The total number of atoms of that element in a molecule
• C. The total mass that element contributes to a molecule a
O
D. The relative amount of mass an atom contributes to
a molecule
Answer:
I think Option no D is the suitable answer
A sealed, insulated calorimeter contains water at 310 K. The surrounding air temperature is 298 K, and the water inside the calorimeter remains at 310 K two hours later. What type of system does the calorimeter attempt to model
There is no heat exchange with the environment since the calorimeter is insulated. This may be demonstrated by saying: Since the calorimeter is a fixed unit, it follows that its heat capacity likewise has a fixed value.
Calorimeters are the tools used to measure the amount of heat. The definitions of heat and temperature, the quantity of heat absorbed to raise a body's temperature, the distinction between heat and temperature, and specific heat capacity are among the fundamental ideas presented in this chapter. A chemical reaction's associated thermal energy change is what causes a calorimeter's temperature to fluctuate. If the calorimeter absorbs heat (q calorimeter > 0) and its temperature rises, the reaction is producing heat (q rxn 0).
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river system smallest to largest
As stated, the Tributary, River, and River system are in order of largest to smallest.
What is the short definition of a river?A river is a part of the ocean that resembles a ribbon and flows downward under the influence of gravity. A river may be both large and deep or it may be only shallow enough to wade over. A stream, watercourse, or brook is a streaming water source that is lower than a river.
What is a river metaphor?The river flows through the landscape like a silver ribbon. The fast flowing river plunders everything in its path. The river is a seal that is attempting to return toward the tidal ways. A grizzly bear is the river, leaping to get its prey.
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The complete question is-
Place the following in order from smallest to largest.
River, River system, Tributary.
Does a meter stick measure distance?
Inside the metric system, length as well as distance were two of the most significant metrics. Measurement of length and distance can be done in a variety of ways.
Using a metre stick is among the most popular methods for gauging these amounts.
A meterstick, meterstick, nor yardstick consists of either a straightedge as well as foldable ruler was using to measure length, and therefore is notably common inside the construction business. They frequently consist of wood as well as plastic, and their joints frequently consist of plastic as well as metal to allow for folding.
A metre stick is a highly helpful tool in science that is exactly one metre long. A metre stick can be used to gauge items and distances that are both less than as well as longer than one metre.
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In what part of this system are the two energy outputs found?
The part of the system that has two outputs of energy is the bulb.
What is the energy transformation?We would have to recall that on the basis of the first law of thermodynamics, it can be said that energy can not be created nor destroyed but that energy would have to be converted from one form to the other.
In this case, we can see that as the boy is cycling, there is the conversion of the mechanical energy of the boy to the heat and the light energy of the bulb as shown. These are the outputs referred to above.
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15) Lidocaine 2 gm/500 mL D5W is ordered to run at 3.5 mg/min. At what rate should the IV pump be set
Ordered to run at 3.5 mg/min is a dose of lidocaine 2 g/500 mL D5W. The IV pump should be set at a rate of 52.5 mL per hour.
Given 1mg/min = 60mg/hour
Then 3.5 mg/min = 3.5 x 60 mg/hour = 210mg/hour
Lidocaine is 2gm/500mL = 2000mg/500mL
If you only need to calculate the infusion rate, or the amount of medication to infuse per hour, you can do it by taking the entire volume in mL and dividing it by the total number of hours the medication is supposed to be infused over. This will give you the rate in mL per hour.
Then the flow of rate = 210mg/hour / 2000mg/500mL = 210x500/2000 = 52.5mL/hour.
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Is irony the expected outcome?
In literary classes, the three most popular types are verbal irony, dramatic irony, and situational irony. When a speaker or narrator says something that contradicts what they mean, what they intend, or what the context necessitates, this is called verbal irony.
What is irony?One thing is expressed while another is meant in an ironic statement. For example, on a chilly, wet gray day, you would exclaim, "What a gorgeous day!" Alternatively, if you were suffering from a severe case of food sickness, you may respond, "Wow, I feel terrific today." "ffers points of view and ideas that are, at most, intriguing... However, it does not reach the truth." Ronagh and Souder are particularly concerned with scientific assertions that are not meant to be taken seriously.
Here,
The three most common varieties in literary studies are verbal irony, dramatic irony, and situational irony. Verbal irony occurs when a speaker or narrator says something that contradicts what they mean, what they intend, or what the context requires.
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world production of ammonia is now about 30 times greater than it was in 1950 suggest why the demand for ammonia is increased
There are a few reasons why the demand for ammonia has increased over time:
Population growth: The world's population has grown significantly over the past 70 years, and as the population has grown, so has the demand for food. Ammonia is a key ingredient in the production of fertilizers, which are used to help grow crops and increase food production. As the population has increased, so has the demand for fertilizers, which has contributed to the increase in the production of ammonia.Industrialization: As more countries have industrialized and developed, there has been an increased demand for ammonia to use as a feedstock in the production of chemicals, plastics, and other industrial products.Energy production: Ammonia can be used as a source of renewable energy, and there has been an increased demand for clean energy sources in recent years. This has led to an increase in the production of ammonia for use in energy production.Environmental concerns: Ammonia can be used to reduce greenhouse gas emissions, and there has been an increased focus on finding ways to reduce environmental impact. This has led to an increase in the production of ammonia for use in environmental applications.Hope This Helps You!
What is the name of an isotope that has 14 protons and 14 neutrons?
The name of an isotope that has 14 protons and 14 neutrons is Silicon-28
The total number of protons and neutrons in an isotope's nucleus is referred to as the mass number. This is due to the fact that each proton and neutron has a mass of one atomic mass unit.
We may get the mass of the atom by multiplying the total number of protons and neutrons by 1 amu.
The atomic number Z is 14 if there are 14 protons. Z being the quantity of large positively charged nuclear particles by definition.
Silicon is what we have if Z is the atom's identity and Z=14. The isotope of the element is 28S because the element may contain more or fewer neutrons than Z, where neutrons are heavy, neutrally charged nuclear particles.
Silicon-28 is the isotope with 14 protons and 14 neutrons.
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Which of the following would be a reasonable unit for the rate constant of a second order reaction?
1. mol/L.sec
2. mol2/sec.L2
3. 1/sec
4. L/mol.sec
5. L2/mol2.sec
Option (4) is correct. The rate constant of a second order reaction has the unit L/mole. sec.
In the Second order reaction the rate is proportional to the square of the concentration of one reactant. Rate of Second order reaction is proportional to the product of the concentrations of two reactants. Such reactions generally have the form,
A + B → products.
Each monomer combines to form a larger molecule is called dimer. For the units of the reaction rate to be moles per liter per second (M/s), the units of a second-order rate constant must be the inverse (M−1·s−1). Because the units of molarity are expressed as mole/L, the unit of the rate constant can also be written as L(mole ·s).
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In the lab, the dominant phenotype for sheep color is wool and the recessive phenotype for sheep color is wool
The dominant phenotype for sheep color is wool because it is the most common color seen in sheep.
What do you mean by Phenotype?
Phenotype is the physical, biochemical, and physiological characteristics of an organism, as determined by both genetic makeup and environmental influences. It is the physical expression of an organism's genes, and can be seen in its morphology, development, and behavior.
Wool is usually white or off-white in color and is the result of a dominant gene. The recessive phenotype for sheep color is non-wool, which is usually a darker color, such as black, brown, or gray. This is the result of a recessive gene and is less common than the dominant gene.
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Normal text Calibri
25) Look at the way the contour lines point or bend on the topographic map below. Match the blanks on
the map below using the terms "Upstream" or "Downstream" based on the direction the stream is
flowing.
Zo
1?
2.?
In the given bend on the topographic map, 1. is Downstream and 2. is Upstream.
What is Upstream and Downstream of the river?The stream can be described as the moving water in a river is called a stream. Upstream can be described as if the water is flowing in the opposite direction to the stream, it is known as upstream.
Downstream can be described as flowing along the direction of the stream, it is known as downstream.
Still water can be described as under this circumstance the water is stationary and the speed of the water is equal to zero.
All rivers flow downhill from higher elevations to lower elevations and perpendicular to the contour line. As a rule of thumb, the V-shaped contour is representing upstream.
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Why is it that some materials made up of entirely nonmetal atoms are soluble in water while some are not
some materials made up of entirely nonmetal atoms are soluble in water while some are not Due to different combinations of pairs created, which might either dissolve extremely well, or not dissolve whatsoever
The solubility of a substance in water depends on the nature of the chemical interactions between the substance and the water molecules. Some materials made up of entirely nonmetal atoms are soluble in water because they can form hydrogen bonds with the water molecules. These materials are called polar solvents and are typically composed of polar molecules, like those found in many organic compounds. For example, ethanol (C2H5OH) is a polar solvent that is composed of entirely nonmetal atoms and is soluble in water because it can form hydrogen bonds with the water molecules.On the other hand, some materials composed of entirely nonmetal atoms are not soluble in water because they do not form hydrogen bonds with the water molecules. These materials are called non-polar solvents and are typically composed of non-polar molecules, like those found in many hydrocarbons.
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2. How many moles of helium are present in a balloon at STP if the volume is 3.7 L? Please show all work!
Using the Ideal Gas Law equation: [tex]PV=nRT[/tex]
P = pressure (kPa)V = volume (L)n = moles (mol)R = gas constant( [tex]\frac{kPaL}{molK}[/tex])T = Temperature (K)STP also known as Standard Temperature and Pressure is a set of conditions at sea level
At STP:
P = 101.3 kPa
T = [tex]0^o C[/tex] or 273 K
[tex]n=\frac{PV}{RT}[/tex]
[tex]n=\frac{101.3kPa)(3.7L)}{(8.31\frac{kPaL}{molK})(273K)}[/tex]
[tex]n = 0.16 mol[/tex]
How does thermal energy flow between a hot or cold pack and the atmosphere?
A. Both hot and cold packs absorb energy from the atmosphere.
B. Hot packs release energy into the atmosphere and cold packs absorb energy from the atmosphere.
C. Both hot and cold packs release energy from the atmosphere.
D. Hot packs absorb energy from the atmosphere and cold packs release energy into the atmosphere
Thermal energy flow between a hot or cold pack and the atmosphere by the D. Hot packs absorb energy from the atmosphere and cold packs release energy into the atmosphere.
When a hot pack is applied to the skin, the heat energy stored inside the pack is transferred to the skin, by conduction, and the heat energy is absorbed by the skin. Cold packs work in the opposite way, the cold energy stored inside the pack is transferred to the skin and released into the atmosphere.
The heat energy is conducted out of the pack and then radiated out into the atmosphere in the case of a cold pack, and The heat energy is conducted into the pack and then radiated out into the atmosphere in the case of a hot pack.
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0.23 g of a sample of common salt contained 0.1518 g of chlorine .show that these results are in agreement with the law of constant proportion
To solve this we must be knowing each and every concept related to Law of constant proportion. Therefore, the results are in agreement with the law of constant proportion.
What is Law of constant proportion?Chemical compounds are composed of components that are present in a set ratio by mass, according to the Law of Constant Proportion. The Proust law or Law of Definite Proportions is another name for the Law of Constant Proportion. NaCl will continue to have a 1:1 mass ratio.
mass of NaCl = mass of Cl + mass of Na
0.25 g= 0.1518 gm+ mass of Na
mass of Na = 0.0982 gm.
ratio of 1st sample= mass of Cl /mass of Na
= 0.1518 gm/ 0.0982
=1.54
In the second sample, NaCl weighs 0.24 g, Cl weighs 0.1458 g and Na weighs 0.0942 g.
ratio of 2nd sample is = 0.1458 g/0.0942 g.
=1.54
Therefore, the results are in agreement with the law of constant proportion.
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Which of the following properties of covalent compounds are influenced by ionic character?
a. melting point
b. boiling point
c. viscosity
d. all of the above
The property of the covalent compound that is influenced by ionic character is boiling point. Option B
What is the ionic character?We know that for compounds, the kind of bonds that they have are usually neither here nor there. The bonds would have an ionic character and also a given amount of the covalent character.
We must note that the ionic character of a bond is very important when we discuss intermolecular interactions and they do affect the boiling points of the substances very much.
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Which element doe not form a table ion with the ame electronic configuration a neon?
A Magneium B Fluorine C Sodium D Chlorine
Sodium does not form a stable ion with the same electronic configuration as neon.
Electronic configuration of an element describes that how the electrons are distributed in its atomic orbitals. Electronic configuration of an atoms follows a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.
Sodium (Na) ion has the same electronic configuration as that of neon. Both are the isoelectronic species with 10 electrons and the electronic configuration is 1s22s22p6.
Sodium has electronic configuration is 1s22s22p63s1. It loses one electron to give Na+ ion with the electronic configuration of neon (Ne).
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A calibrated flask was filled to the 25.00 mL mark with ethyl alcohol. By weighing the flask before and after adding the alcohol, it was determined that the flask contained 19.7325 g of alcohol. In a second experiment, 25.1060 g of metal beads were added to the flask, and the flask was again filled to the 25.00 mL mark with ethyl alcohol . The total mass of the metal plus alcohol in the flask was determined to be 38.6794 g.
The density of the metal beads, given that total mass of the metal plus alcohol in the flask was determined to be 38.6794 g is 3.22 g/mL
How do I determine the density of the metal beads?We'll begin by obtaining the density of the alcohol in the flask with the metal beads. This is illustrated below:
Mass of alcohol = 19.7325 gVolume of alcohol = 25 mLDensity = ?Density = mass / volume
Density of alcohol = 19.7325 / 25
Density of alcohol = 0.7893 g/mL
Next, we shall determine the volume of the alcohol in the 25 mL flask. This can be obtained as follow:
Density of alcohol = 0.7893 g/mLMass of metal beat = 25.1060 gTotal mass of metal beat and alcohol = 38.6794 gMass of alcohol in flask = 38.6794 - 25.1060 = 13.5734 gVolume of alcohol in flask =?Volume = mass / density
Volume of alcohol in flask = 13.5734 / 0.7893
Volume of alcohol in flask = 17.2 mL
Finally, we shall determine the density of the metal beads. Details below:
Mass of metal beat = 25.1060 gVolume of alcohol in flask = 17.2 mLVolume of flask = 25 mLVolume of metal beads = 25 - 17.2 = 7.8 mLDensity of metal beads =?Density = mass / volume
Density of metal beads = 25.1060 / 7.8
Density of metal beads = 3.22 g/mL
Thus, we can conclude that the density of the metal beads is 3.22 g/mL
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Complete question:
A calibrated flask was filled to the 25.00 mL mark with ethyl alcohol. By weighing the flask before and after adding the alcohol, it was determined that the flask contained 19.7325 g of alcohol. In a second experiment, 25.1060 g of metal beads were added to the flask, and the flask was again filled to the 25.00 mL mark with ethyl alcohol . The total mass of the metal plus alcohol in the flask was determined to be 38.6794 g. What is the density of the metal in g/mL?
What is the mass in grams of 1.56 moles of aspartame?
459.1 g of aspartame has a 1.56 moles of aspartame.
Artificial sweetener aspartame is potent and low in calories. About 200 times sweeter than sugar, it is a white, odourless powder. It is legal to use in Europe as a tabletop sweetener, an energy-reducing food ingredient in beverages, desserts, and sweets, dairy products, chewing gum, and other foods.
Aspartame is a dipeptide that is created through the formal condensation of the amino group of methyl L-phenylalaninate with the alpha-carboxy group of L-aspartic acid.
Here, aspartame has 1.56 moles.
Molar mass of aspartame = 294.40 g/mol
So, Number of moles of aspartame = [tex]\frac{Given Mass}{Molar Mass}[/tex]
Mass of aspartame = Number of moles × Molar mass
or, mass = 1.56 × 294.3
or, mass = 459.1 g
Hence, Mass of aspartame of 1.56 moles of aspartame is 459.1 g.
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Question 4
3 pts
Which if the following elements will not reach an octet when in a bond?
Calcium
O Lithium
Magnesium
O Carbon
Ouestion 5
Lithium has a valence of 1, so it will not usually reach an octet in a bond. It tends to form ionic bonds, in which there is only one electron transfer, rather than two or more which would be required to reach an octet.
What is Lithium?Lithium is a soft, silver-white metal that is the lightest of all alkali metals. It is a key component in many batteries, and is also used in a variety of other applications. It has a low reactivity, and is relatively stable when exposed to air and water. In its elemental form, Lithium is a highly flammable, corrosive metal that is rarely found in its pure form in nature. It can be found in minerals such as lepidolite and spodumene, and is commonly mined from salt flats and brine pools.
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What do the small lines marked on the Meterstick represent?
The small lines marked on the Meterstick represents the measurement you make can be certain to the centimeter.
Centimeter is the metric unit of the measurement which is used for measuring the length of an object.
Meterstick is the measuring stick one meter long that is marked off in centimeters and usually millimeters. A meterstick is divided into 100 cm. The smallest lines on the meterstick are the centimeters which means that each measurement you make can be certain to the centimeter. It is used to measure the things in meters and centimeters. For example: Length of a table or the width of a bag can be measured by using a meterstick.
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Which type (or types) of crystalline solid is characterized by each of the following: (a) high mobility of electrons throughout the solid; (b) softness, relatively low melting point; (c) high melting point and poor electrical conductivity; (d) network of covalent bonds?
Types of crystalline solids characterized by;
(a) high mobility of electrons throughout the solid; metallic solids.
(b) softness, relatively low melting point; covalent network solid.
(c) high melting point and poor electrical conductivity; ionic solids.
(d) network of covalent bonds; molecular solids.
What are the types of crystalline solids?Crystalline solids are those that have their atoms, ions, or molecules arranged in a regular, well-defined pattern. The unit cell is the smallest repeating pattern of crystalline solids, and unit cells are similar to bricks in a wall in that they are all identical and repeating.
Ionic solids, molecular solids, network covalent solids, and metallic solids are the four types of crystalline solids. A covalent network solid is a type of solid that has a low melting point, softness, and low electrical conduction. Metal cations are surrounded by a "sea" of mobile valence electrons in metallic crystals.
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What is the priority nursing intervention for a patient who experienced a chemical burn injury?
Respiratory and fluid status are primary nursing interventions for patients with chemical burns.
When treating, make sure that the causative agent is completely removed. Remove contaminated clothing and jewelry and use the shower if necessary to wash off the chemicals for at least 20 minutes. Protect your eyes from chemical contamination. Cover the burn with a clean bandage.
During the first few days after a burn, check your peripheral pulse frequently for restricted blood flow. Carefully monitor hourly fluid intake and urine output, as well as blood pressure and heart rate. Any changes should be reported immediately to the burn surgeon.
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Among the following radioactive parent isotopes, which has the shortest half-life?A) uranium-238B) potassium-40C) rubidium-87D) carbon-14
The half-life of a radioactive isotope is the time it takes for half of the original number of atoms in a sample to decay.
The isotope with the shortest half-life among the given options is:
D) carbon-14
The half-life of carbon-14 is 5,730 years which is shorter than the other isotopes. Uranium-238 has a half-life of 4.5 billion years, potassium-40 has a half-life of 1.25 billion years and rubidium-87 has a half-life of 49.8 billion years, all are greater than the half-life of carbon-14.
So, carbon-14 is the isotope with the shortest half-life among the given options.
It is important to note that the half-life of an isotope is a constant property of the isotope. For example, the half-life of carbon-14 is always 5,730 years and does not change with the amount of carbon-14 present or any other factors.
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naproxen (Aleve): 73.03%C, 6.13%H, and 20.84%O Express your answer as a chemical formula?
If the molecular weight is 230.26 g/mol carbon = 73.03% = 230.26*73.03/100 = 168.15/12 = 14 Carbons Hydrogen = 6.13% = 230.26*6.13/100 = 14/1 = 14 Hydrogens Oxigen = 20.84% = 230.26*20.84/100 = 47.98/16 = 3 Oxygens Hence the empirical formula is C14H14O3
What is a weight example?The International System for Units (SI) defines the newton as the unit of force, which is used to measure weight. For instance, a kilogram of matter weighs around 9.8 newtons on Earth's surface and around each as much on Moon.
How are weights determined?Weight, which is expressed in newtons, is a unit of measurement for the gravitational force acting on an object. The mass of a bird with a mass of 15 g changes with the strength of the gravity influence acting on it, and would differ significantly if it were measured, for instance, on the Moon rather than on Earth.
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