Question 1

Given the balanced chemical equation: $$2H_2 + O_2$ \rightarrow 2H_2O$$, what is the mole ratio of $$H_2 to$$ $$O_2$$?

Accepted Answer

2:1

Question 2

In the reaction $$N_2 + 3H_2$$ \rightarrow 2NH_3$$, if you start with 6 moles of H_2$, how many moles of NH_3$ can be produced?

Accepted Answer

4 moles

Question 3

For the reaction $$2CO + O_2$ \rightarrow 2CO_2$$, what is the volume ratio of $$CO to$$ $$CO_2 if $$all gases are measured at the same temperature and pressure?

Accepted Answer

1:1

Question 4

A balanced equation is $$2SO_2 + O_2$ \rightarrow 2SO_3. If $$you have 5 molecules of $$O_2$$, how many molecules of $$SO_3$$ can be formed?

Accepted Answer

10 molecules

Question 5

Which statement is true about the balanced equation $$C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O$$?

Accepted Answer

5 volumes of $$O_2$$ react with 1 volume of $$C_3H_8 to $$produce 3 volumes of $$CO_2$$ and 4 volumes of $$H_2O$$

Question 6

If 4 moles of $$NH_3$$ are produced from the reaction $$N_2 + 3H_2$$ \rightarrow 2NH_3$$, how many moles of N_2$ were required?

Accepted Answer

2 moles

Question 7

In the reaction $$2KClO_3 \rightarrow 2KCl + 3O_2$$, what is the ratio of molecules of $$KClO_3$$ decomposed to molecules of $$O_2$$ produced?

Accepted Answer

2:3

Question 8

A medical oxygen tank contains $$O_2$$ gas. If a reaction requires 2 volumes of $$O_2 to $$react with 2 volumes of $$H_2 to $$produce water, what is the volume ratio of $$O_2 to$$ $$H_2O$$ produced?

Accepted Answer

1:2

Question 9

In the reaction $$2Al + 3Cl_2 \rightarrow 2AlCl_3$$, how many moles of $$Cl_2$$ are needed to react completely with 4 moles of $$Al$$?

Accepted Answer

6 moles

Question 10

A car's catalytic converter uses the reaction $$2CO + O_2$ \rightarrow 2CO_2 to $$reduce pollution. If 10 moles of $$CO$$ are present, how many moles of $$O_2$$ are required for complete reaction?

Accepted Answer

5 moles

Question 11

For the reaction $$N_2 + 3H_2$$ \rightarrow 2NH_3$$, what is the molecule ratio of H_2$ to NH_3$?

Accepted Answer

3:2

Question 12

If 8 volumes of $$H_2$$ gas react with $$O_2$$ according to $$2H_2 + O_2$ \rightarrow 2H_2O$$, how many volumes of $$H_2O$$ gas are produced?

Accepted Answer

8 volumes

Question 13

A historical event: The Hindenburg disaster involved the combustion of hydrogen gas. Using $$2H_2 + O_2$ \rightarrow 2H_2O$$, if 100 moles of $$H_2$$ were present, how many moles of $$O_2$$ were needed for complete combustion?

Accepted Answer

50 moles

Question 14

In the reaction $$C_2H_4 + 3O_2 \rightarrow 2CO_2 + 2H_2O$$, what is the ratio of moles of $$O_2$$ consumed to moles of $$CO_2$$ produced?

Accepted Answer

3:2

Question 15

A chemical plant produces $$SO_3$$ using $$2SO_2 + O_2$ \rightarrow 2SO_3. If $$the plant uses 1000 moles of $$SO_2$$, how many moles of $$SO_3$$ are produced?

Accepted Answer

1000 moles

Question 16

In the reaction $$2Na + Cl_2$ \rightarrow 2NaCl$$, if you have 6 moles of $$Na$$, how many moles of $$Cl_2$$ are required?

Accepted Answer

3 moles

Question 17

For the reaction $$2H_2 + O_2$ \rightarrow 2H_2O$$, which of the following best describes the molecule ratio of $$H_2 to$$ $$H_2O$$?

Accepted Answer

1:1

Question 18

A hospital uses $$O_2$$ for patients. If the reaction $$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O$$ occurs during cellular respiration, how many moles of $$CO_2$$ are produced from 1 mole of glucose?

Accepted Answer

6 moles

Question 19

In the reaction $$2NO_2 \rightarrow 2NO + O_2$, what is the volume ratio of NO_2$ to O_2$ if all gases are measured at the same temperature and pressure?

Accepted Answer

2:1

Interpreting Balanced Chemical Equations: Mole, Volume, and Molecule Ratios

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