6. If more reactants are used in a chemical reaction, more products will be produced. This is
because a) More reactants cause the reaction to heat up
b) More reactants take up the same volume
c) More reactants have more atoms to react to form more products
d) Too many products can slow down the reaction

Answers

Answer 1

Answer:

D

Explanation:


Related Questions

If you increase the amount of Reactant A, the reaction rate will also increase.

What is this statement an example of?
A. A theory
B. An observation
C. A hypothesis
D. A scientific question

Answers

C not hundred percent sure though

Help please and thank you

Answers

Answer:

5. The coefficients are: 2, 7, 2, 4

6. The coefficients are: 1, 4, 1, 2

Explanation:

5. Balancing the equation.

__NO₂ + __H₂ —> __NH₃ + __H₂O

The above equation can be balance as illustrated below:

NO₂ + H₂ —> NH₃ + H₂O

There are 2 atoms of O on the left side and 1 atom on the right side. It can be balance by writing 2 before NO₂ and 4 before H₂O as shown below:

2NO₂ + H₂ —> NH₃ + 4H₂O

There are 2 atoms of N on the left side and 1 atom on the right side. It can be balance by writing 2 before NH₃ as shown below:

2NO₂ + H₂ —> 2NH₃ + 4H₂O

There are 2 atoms of H on the left side and a total of 14 atoms on the right side. It can be balance by writing 7 before H₂ as shown below:

2NO₂ + 7H₂ —> 2NH₃ + 4H₂O

Now the equation is balanced. Thus, the coefficients are: 2, 7, 2, 4

6. Balancing the equation:

__SiO₂ + __HF —> __SiF₄ + __H₂O

The above equation can be balance as illustrated below:

SiO₂ + HF —> SiF₄ + H₂O

There are 4 atoms of F on the right side and 1 atom on the left side. It can be balance by writing 4 before HF as shown below:

SiO₂ + 4HF —> SiF₄ + H₂O

There are 4 atoms of H on the left side and 2 atoms on the right side. It can be balance by writing 2 before H₂O as shown below:

SiO₂ + 4HF —> SiF₄ + 2H₂O

Now the equation is balanced. Thus, the coefficients are: 1, 4, 1, 2

What is the value of the quantum number n for a spin-up electron in a 2p orbital?

A. +2
B. -1/2
C. +1
D. +1/2

Answers

Answer:

+1/2

Explanation:

spin up is always +1/2

When copper is heated in air, the solid product that is formed has a greater mass than the original copper. When calcium carbonate is heated in air, the solid product that is formed has less mass than the original
calcium carbonate. Why is the mass of the solid product greater in one reaction but less in the other reaction?​

Answers

Answer:

When heated, oxygen reacts with copper to form copper oxide. If this reaction occurs in a sealed container, will the mass of the container and everything in it increase, decrease, or stay the same and why? The mass will increase because a new kind of molecule is formed.

Explanation:

As above, carbonates decompose upon heating to give the metal oxide and carbon dioxide. The mass is lost as carbon dioxide.

To solve this we must be knowing each and every concept related to mass. Therefore, Carbon dioxide is released as the mass is depleted when carbonates are heated.

What is mass?

Mass defines the quantity of a substance. It is measured in gram or kilogram. Average mass is the mass of atoms of an element that are isotopes.

When copper was heated in the air, the resulting solid product has a larger mass than the initial copper. When calcium carbonate was heated in air, the resulting solid product has much less mass than the initial calcium carbonate. When carbonates are heated, they breakdown into metal oxides and carbon dioxide. Carbon dioxide is released as the mass is depleted.

Therefore, Carbon dioxide is released as the mass is depleted.

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How does light demonstrate quantization?
A. The velocity of a light wave has a direction as well as speed.
B. The wavelength of light increases as the frequency decreases.
C. The frequency of light increases as energy increases.
D. The energy in light waves comes in units called photons.​

Answers

Answer:

D. The energy in light waves comes in units called photons.

Explanation:

its known as quatum theory

What is the mass of 0.125 moles of tin sulfate (SnSO4)?

Answers

Answer:

26.85 grams

Explanation:

The formula for mole calculations is number of moles = given mass/gram-formula mass.

The number of moles is given to us, which is 0.125.

The gram formula mass of SnSO4 is about 214.77.

Plug in the values we have into the equation. It should look like this:

0.125 = x / 214.77

Solve for x by multiplying 214.77 and 0.125. The answer should be about 26.85 grams.

a) explain why caesium is more reactive than potassium.

b) Write the formula of
i) caesium nitrate
ii) caesium sulphate​

Answers

Answer:

Explanation:

(a) Firstly, caesium abd potassium are both in Group 1 of the periodic table. Group 1 metals (also called alkali metals) are the most reactive metals of the periodic table. Caesium is more reactive than Potassium because it has a higher electropositivity than Potassium. Electropositivity is the tendency of a metal to donate electron(s) to form a cation. Electropositivity increases down the group; this is because it is easier for atoms to loose electrons on the outermost shell that are far away from the central nucleus as against atoms whose outermost electrons are closer to the central nucleus. Thus, the more "bulky" an atom is, the farther it's outermost electrons (valence electrons) get from the central nucleus and the easier it is to lose the outermost electron(s). And the easier it is for the valence electron(s) to be removed, the more reactive the atom would be and vice-versa.

Caesium is more reactive than potassium because it is more bulky than potassium, with an atomic number of 55, while potassium has an atomic number of 19.  

NOTE: The closer an electron is to the nucleus, the more difficult it is to be removed from it's shell.

(b) i. Formula for Caesium Nitrate:

Symbol for Caesium is Cs and Nitrate is NO₃⁻.

Cs⁺ + NO₃⁻  ↔  CsNO₃

Formula for Caesium Nitrate is  CsNO₃

ii. Formula for Caesium sulphate

Symbol for caesium is Cs and Sulphate is SO₄²⁻

Cs⁺ + SO₄²⁻  ↔   Cs₂SO₄  

Formula for Caesium sulphate is Cs₂SO₄

NOTE: When writing the formulae, the charges would be exchanged to form the subscript as seen on the product sides above.

please help me I have to submit ​

Answers

Answer:

A FUSE is a type of conductor which protects the circuit by shorting it down when there is excess flow of current passing through it.

Explanation:

A fuse wire is made up of conducting materials such as alloy of tin and lead that has high resistivity. It has a low melting point of 200°C. It works based on the principle of heating effect of electric current. The functions of fuses include the following:

--> Fuses are made up of thin wire CONDUCTORS which interrupts or breaks the current flow of a circuit when in excess, thereby protecting the circuit from damage.

--> it prevents overload of current. In the event where too many appliances are connected to a single circuit, this can lead to overload which triggers a fuse to terminate the circuit connection.

--> It prevents total black-out: SWITCH-LIKE devices known as CIRCUIT BREAKERS share this function with the fuses. The nearest circuit breaks if any dysfunction occurs in the components of the circuit thereby preventing blackout.

What is the pH of a solution with a concentration of 4.2 x 10−5 M H3O+? (4 points)

Select one:
a. 2.31
b. 4.38
c. 5.62
d. 6.87

What is the pH of a solution with a 4.60 x 10−4 M hydroxide ion concentration? (4 points)

Select one:
a. 0.663
b. 3.33
c. 10.1
d. 10.7

Answers

Answer:

1) b. 4.38

2)  d. 10.7

Explanation:

1) The problem tells us that [H₃O⁺] = 4.2x10⁻⁵ M, and keeping in mind that [H₃O⁺]= [H⁺], we can calculate the pH of the solution:

pH = -log[H⁺] = 4.38

2) First we calculate the pOH of the solution:

pOH = -log[OH⁻] = -log(4.6x10⁻⁴) = 3.33

Then we calculate the pH using the following formula:

pH = 14 - pOH = 14 - 3.33pH = 10.7

The pH of a solution with a concentration of 4.2x10⁻⁵ M H₃O⁺ ion is 4.38 and of a solution with a concentration of 4.6x10⁻⁴ OH⁻ ion is 10.7.

What is pH and pOH?

pH of any solution is define as the negative log of the concentration of H⁺ ions and pOH is define as the negative log of the concentration of OH⁻ ions.

Given that concentration of H⁺ ions in solution = 4.2x10⁻⁵ M

pH for this solution is calculated as:
pH = -log(4.2x10⁻⁵) = 4.38

Also given that concentration of OH⁻ ions in solution = 4.6x10⁻⁴

pOH = -log(4.6x10⁻⁴) = 3.33

We know that, pH + pOH = 14.

pH = 14 - 3.33 = 10.7

Hence, value of pH & pOH is 4.38 and 10.7 respectively.

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Our solar system is more than _________ in diameter.

Answers

Answer: 287.46 billion km

Explanation: calculated it myself. nah but thats the answer

8. (05.03 MC) How does temperature influence the appearance of a star? Give an example in your response. (4 points)

Answers

Answer:

Stars have the different colors that make up white light, the color of a star is related to the wavelength of the light which is emitted by the star which is related to the temperature of the star's surface

Very hot temperatures yield hotter wavelength, which light having short wavelength being bluish,  the blue and blue-white stars are the hottest stars, while stars which emit longer wavelength and therefore have a color of brown and red have a cooler surface temperature

The surface temperature of a star also has an effect on the bright appearance of a star. The higher the temperature of a star the higher the heat energy given off and the brighter the star will be, as a star that gives off more energy is brighter than one that gives less energy

Explanation:

why doesn't calcium react with water in your body
explain pls

Answers

Answer:

Bones aren't made of calcium metal. Bones are a collegun structure filled in with mostly calcium carbonate and some calcium phosphate

Answer:

Bones aren't made of calcium metal. Bones are a collegun structure filled in with mostly calcium carbonate and some calcium phosphate

Explanation:

I hope this helps

explain how a kaleidoscope can be used as evidence to explain the behavior of light waves

(help asap) PLEASE HELP

Answers

Answer:

As you turn the tube you can see patterns of colors at the other end of the tube. A kaleidoscope works by reflecting light. Light travels in a straight line. When light bumps into something it changes direction.

Kaleidoscopes are made with two or more mirrors. Light reflecting between these mirrors produces multiple virtual images of stunning beauty. ... Light rays are assumed to bounce off the mirrors like a ball bounces off a hard surface. Formally stated, the angle of incidence equals the angle of reflection.

Explanation:

A student accidentally left a bottle of ammonia unclosed in the corner of a laboratory. After a few minutes the entire laboratory smelled of ammonia. Which process has occurred?
Diffusion
Distillation
Evaporation
Brownian motion

Answers

Diffusion I’d the spreading of something more widely.

The smell of ammonia diffused throughout the laboratory.

Answer : Diffusion

Which fundamental force(s) can act over very long distances?

A. Gravity and electrostatic force
B. Strong nuclear force and weak nuclear force
C. Gravity only
D. Electrostatic force and strong nuclear force

Answers

Answer:

C. Gravity only

Explanation:

what are the compounds for the chemical formula B4S

Answers

Answer:

boron sulfide

b=boron

s=sulfer

Explanation:

Explain how you determine the molar mass of Al2(SO4)3

Answers

Molar Mass of Al = 27

Molar Mass of S = 32

Molar Mass of O = 16

Putting the molar mass value in Al2 (SO4) 3

27 x 2 + 3 ( 32 + 16 x 4)

54 + 3 ( 32+ 64)

54 + 3 x 96

54 + 288

342

What effect will this decision have on the American political process? Rucho, et al v. Common Cause

Answers

Answer:

If electoral districting is left to incumbent legislatures, it becomes a tool to stack the political process against disempowered opponents

Explanation:

The diagram shows the breathing system in a human. What does label 1 show?

Answers

Answer:

parietal pleura

Explanation:

The pleurae, which are serous membranes, divide the thoracic cavity's wall from the lungs. The parietal pleura covers the interior of the thorax, mediastinum, and diaphragm, while the visceral pleura covers the surface of the lungs.

What is the function of parietal pleura?

The perianal pleura, the outer layer, is attached to the chest wall. The lungs, mediastinum's neurovascular structures, and bronchi are all covered by the inner layer (visceral pleura).

The pleura's role in breathing is to enable the lungs to expand and collapse as efficiently as possible.

The parietal and visceral pleura can move over one another without rubbing against one another thanks to the pleural fluid's lubricating properties. The pleural layers themselves produce this fluid.

Therefore, parietal pleura, which surround the lungs in thoracic cavity.

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PLEASE HELP THIS IS AN EMERGENCY!!!!!

An atom's electron configuration ends with 3p3. If another atom has nine more electrons, what would be the continuation of the electron configuration? (5 points)

A.)3p64s23d4

B.)03p34s23d7

C.)3p63d44s2

D.)3p33d74s2

Answers

Answer:

A.) is the correct answer

The continuation of the electronic configuration would be 3p6, 4s2, 3d4

The initial p-orbital (the 3p3) is incompletely filled. Thus, the first thing would be to fill it completely (3p6) so as to obey the orbital-filling rule. This leaves 6 more electrons

After 3p orbital, the next orbitals are 4s, 3d, 4p, 5s, etc.

The 4s orbital will take a maximum of 2 electrons, leaving 4 more electrons.

Next would be the 3d orbital which can take a maximum of 8 electrons, but only 4 electrons are left.

Thus, the electronic configuration would be 3p6, 4s2, 3d4.

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What is the name of Ba(OH)2

Answers

Answer:

Barium Hydroxide

Explanation:

..........................

A bird has flown 300 metres for 6 hours. What is the bird's speed? Formula for speed = d/t * 2 points

40 m/hr

50 m/s

50 m/h

50 m/min​

Answers

Answer:

C

Explanation:

d=300

t=6hr

speed=?

speed=300/6

speed=50m/hr the important thing in this question is to get the right units

A slide 3.3 m long makes an angle of 32° with the ground. How high is the top of the slide above the ground?

A. 2.06 m

B. 2.8 m

C. 1.75 m

D. 1.84 m

Answers

sin 32 = height/3.3 m
height = sin 32 (3.3 m)
height = 1.75 m

which element is most reactive among aluminium, boron, calcium and beryllium? Give reason.

Answers

Answer:

Well, if you check the reactivity series, calcium is more reactive than magnesium. This means there's a a trend of increasing reactivity as we go down the group. As beryllium is above magnesium, it must be the least reactive. Then magnesium is in the middle and the most reactive has to be calcium.

Answer:

Aluminium because highl elecronegativety element and more metalic hign melting and boling point from the other

According to Le Châtelier's principle, how will a decrease in concentration of a reactant affect the equilibrium system?

Answers

Answer:

a decrease in concentration affects the equilibrium

Explanation:

disturbance: equilibrium was disturbed by a decrease in concentration

response:system acts so as to increase concentration

reaction favoured: forward reaction

concentration: concentration of ...... ND ....... increases ND that of ......(product)decreases

Which of these compounds would you predict
to have the highest boiling point?
C₂H6
C5H12
C6H14
CH10
C3H8

Answers

Answer:c6h14

Explanation:

I think its going to be C6H14

Un compuesto orgánico que contenía solo H y C fue quemado en corriente de O2, encontrándose que 0.210 g daban 0.660 g de CO2.La densidad del vapor del compuesto es de 1.87 g/dm3 a 273 °K y 1 atm. ¿Cuál es la fórmula molecular?

Answers

Answer:

[tex]C_3H_6[/tex]

Explanation:

¡Hola!

En este caso, basado en la información dada, es posible calcular las moles de carbono en el compuesto al usar la masa molar del CO2 y la siguiente relación molar:

[tex]n_C=0.660gCO_2*\frac{1molCO_2}{44.01gCO_2}*\frac{1molC}{1molCO_2}=0.015molC[/tex]

Ahora, calculamos las moles de hidrógeno restando la masa de carbono de la de la muestra basado en el siguiente factor molar:

[tex]m_{H}=0.210g-0.015molC*12.01gC/molC=0.030molH[/tex]

Entonces la formula empírica del compuesto resulta:

[tex]CH_2[/tex]

Dado que el carbono y el hidrógeno están en una relación 1:2. Ahora bien, calculamos la masa molar del gas considerando la presión, densidad y temperatura del mismo:

[tex]PV=nRT\\\\PV=\frac{m}{MM}RT \\\\MM=\frac{m}{V}\frac{RT}{P}=\frac{dRT}{P}\\\\MM=\frac{1.87g/dm^3*0.08206\frac{atm*L}{mol*K}*273K}{1atm}=41.9g/mol[/tex]

Es decir que la fórmula molecular y la empírica están en una relación de 3, por lo que la fórmula molecular resulta:

[tex]C_3H_6[/tex]

¡Saludos!

sulphur dioxide reacts with oxygen to produce sulphur trioxide, balance the chemical equation using lcm method?​

Answers

Answer:

2SO2 + O2 → 2SO3

Explanation:

According to this question, sulphur dioxide (SO2) reacts with oxygen to produce sulphur trioxide (SO3). The equation is as follows:

SO2 + O2 → SO3

The above equation is unbalanced because there are unequal number of atoms of each element in the both reactants and products. To balance the equation, we use coefficients to make the number of atoms equal. The balanced equation is as follows:

2SO2 + O2 → 2SO3

- There are 2 moles of S on both sides of the equation.

- There are 4 moles of Oxygen on both sides of the equation.

TIMED PLS HELP ASAP AND WILL GIVE BRAINLIST
Given the following reaction:

2 Al + 2 KOH + 4 H2SO4 + 22 H2O --> 3 H2 + 2KAl(SO4)2•12H2O

If you start with 8.3 mL of 9.9M sulfuric acid, what is the theoretical yield of alum?

Answers

Answer: The theoretical yield of alum is 12.09 g

Explanation:

Molarity is calculated by using the equation:

[tex]\text{Molarity}=\frac{\text{Moles}}{\text{Volume}}[/tex] ......(1)

We are given:  

Molarity of sulfuric acid = 9.9 M

Volume of solution = 8.3 mL = 0.0083 L (Conversion factor: 1 L = 1000 mL)

Putting values in equation 1, we get:

[tex]\text{Moles of sulfuric acid}=(9.9mol/L\times 0.0083L)=0.08217mol[/tex]

The given chemical equation follows:

[tex]2Al+2KOH+4H_2SO_4+22H_2O\rightarrow 3H_2+2KAl(SO_4)_2.12H_2O[/tex]

By the stoichiometry of the reaction:

4 moles of sulfuric acid produces 2 moles of alum

So, 0.08217 moles of sulfuric acid will produce = [tex]\frac{2}{4}\times 0.08217=0.0411mol[/tex] of alum

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(2)

Molar mass of alum = 294.24 g/mol

Plugging values in equation 2:

[tex]\text{Mass of alum}=(0.0411mol\times 294.24g/mol)=12.09g[/tex]

Hence, the theoretical yield of alum is 12.09 g

Calculate the number of moles of NaOH in an aqueous solution of 36 cm3 of 0.1 mol dm−3.

Answers

Answer:

0.0036 moles of NaOH are present

Explanation:

A solution of 0.1mol/dm³ contains 0.1 moles of solute (In this case, NaOH), per 1 dm³ of solution.

36cm³ are in dm³ (1000cm³ / 1dm³):

36cm³ * (1dm³/1000cm³) = 0.036dm³

The moles are:

0.036dm³ * (0.1mol/dm³) = 0.0036 moles of NaOH are present

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