need help with chemistry

Question

In the balanced equation below, how many moles of water are created if 23.8 moles of acid react with excess magnesium hydroxide?

H2CO3 + Mg(OH)2 —> MgCO3 + 2 H2O

Answer 1

Hello, Kambri,

The equation tells us that we get two moles of water for every one mole of (carbonic) acid. If we start with 23.8 moles of acid and have excess of magnesium hydroxide, we'll produce 2*(23.7 moles) = 47.4 moles of water.

Bob