Question
Suppose 20 atoms of hydrogen (H) react with chlorine (Cl) to produce 20 molecules of hydrochloric acid (HCl). According to the law of conservation of matter, how many atoms of chlorine reacted with the hydrogen?(1 point)
Responses
40
40
10
10
0
0
20
Responses
40
40
10
10
0
0
20
Answers
GPT-4o mini
To determine how many atoms of chlorine reacted with the hydrogen, we need to look at the reaction between hydrogen and chlorine to form hydrochloric acid (HCl). The balanced chemical equation for the reaction is:
\[ \text{H}_2 + \text{Cl}_2 \rightarrow 2 \text{HCl} \]
From this equation, we can see that:
- 1 molecule of Cl₂ produces 2 molecules of HCl.
- Therefore, to produce 20 molecules of HCl, we need 10 molecules of Cl₂.
Since each molecule of Cl₂ contains 2 atoms of chlorine (Cl), we have:
\[ 10 \text{ molecules of Cl}_2 \times 2 \text{ atoms of Cl per molecule} = 20 \text{ atoms of Cl} \]
So, the number of atoms of chlorine that reacted with the hydrogen is **20**.
\[ \text{H}_2 + \text{Cl}_2 \rightarrow 2 \text{HCl} \]
From this equation, we can see that:
- 1 molecule of Cl₂ produces 2 molecules of HCl.
- Therefore, to produce 20 molecules of HCl, we need 10 molecules of Cl₂.
Since each molecule of Cl₂ contains 2 atoms of chlorine (Cl), we have:
\[ 10 \text{ molecules of Cl}_2 \times 2 \text{ atoms of Cl per molecule} = 20 \text{ atoms of Cl} \]
So, the number of atoms of chlorine that reacted with the hydrogen is **20**.