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)

Question

Responses

20

40

10

0
0

Answer 1

To determine how many atoms of chlorine reacted with the hydrogen to produce hydrochloric acid (HCl), we can look at the chemical reaction involved.

The balanced equation for the reaction between hydrogen and chlorine to produce hydrochloric acid is: \[ \text{H}_2 + \text{Cl}_2 \rightarrow 2\text{HCl} \]

From the problem, we know that 20 atoms of hydrogen (H) are reacting to form 20 molecules of HCl. Each molecule of HCl consists of 1 atom of hydrogen and 1 atom of chlorine.

Given that:

• Each molecule of HCl requires 1 atom of Cl,
• Therefore, to produce 20 molecules of HCl, you would need 20 atoms of chlorine.

So, the number of atoms of chlorine that reacted is 20.

The correct response is 20.