Question

nitrogen dioxide is a gas commonly found in polluted air. it is produced when nitric oxide in the air reacts with oxygen gas. consider the following reaction: 6 molecules of nitric oxide (no) react with 3 molecules of oxygen (o₂) to produce some amount of nitrogen dioxide (no₂). complete the table below. chemical element | number of atoms in the reaction n | o | during this reaction, how many molecules of nitrogen dioxide (no₂) are produced?

Explanation:

For the number of N atoms:

Step1: Calculate N atoms from NO

Each NO molecule has 1 N atom. There are 6 NO molecules, so N atoms from NO: \( 6 \times 1 = 6 \)

Step2: Sum N atoms (no N in \( O_2 \))

Total N atoms: \( 6 \)

For the number of O atoms:

Step1: Calculate O atoms from NO

Each NO molecule has 1 O atom. 6 NO molecules: \( 6 \times 1 = 6 \)

Step2: Calculate O atoms from \( O_2 \)

Each \( O_2 \) has 2 O atoms. 3 \( O_2 \) molecules: \( 3 \times 2 = 6 \)

Step3: Sum O atoms

Total O atoms: \( 6 + 6 = 12 \)

For the number of \( NO_2 \) molecules:

Step1: Determine the reaction ratio

The reaction is \( 2NO + O_2
ightarrow 2NO_2 \) (simplified from 6 NO and 3 \( O_2 \), divide by 3: 2 NO + 1 \( O_2
ightarrow 2 NO_2 \))

Step2: Calculate \( NO_2 \) molecules

From 6 NO (since 2 NO produce 2 \( NO_2 \)), 6 NO will produce \( \frac{6}{2} \times 2 = 6 \) \( NO_2 \) molecules

Table Answers:

• N: \( 6 \)
• O: \( 12 \)

\( NO_2 \) Molecules:

\( 6 \)

Answer:

s:

• N atoms: \( \boldsymbol{6} \)
• O atoms: \( \boldsymbol{12} \)
• \( NO_2 \) molecules: \( \boldsymbol{6} \)