Question

In the balanced reaction: HCl + NaOH --> NaCl + H2O, if you start with 4.4 x 10^24 atoms of HCl, what mass (in grams) of water will be produced?

A) 4.4 x 10^24 atoms
B) 65.8 g
C) 131.7 g
D) 263.3 g

Answer 1

To determine the mass of water produced, convert the given number of atoms of HCl to moles. Use the balanced equation to find the corresponding number of moles of water and then convert moles to grams using the molar mass of water.

Step-by-step explanation:

To determine the mass of water produced in the reaction, we need to calculate the number of moles of HCl and use the balanced equation to find the corresponding number of moles of water. Starting with 4.4 x 10^24 atoms of HCl, we can convert to moles by dividing by Avogadro's number (6.02 x 10^23 atoms/mol). This gives us 7.3 moles of HCl. Since the balanced equation shows a one-to-one ratio of HCl to water, we can conclude that 7.3 moles of water will be produced. To convert moles to grams, we use the molar mass of water (18.02 g/mol). Multiplying 7.3 moles by 18.02 g/mol gives us a mass of 131.7 grams of water.