Chemistry help please

Test Preparation
1

<p>hi, im new and i need a little help...</p>

<p>The question </p>

<p>Zn + 2HCL --> ZnCl2 + H2</p>

<p>i have 2 questions on this.</p>

<p>If you had 100 grams of each reactant, which reactant would run out first?</p>

<p>How many grams of zinc chloride would you expect to make?</p>

<p>If able, please explanation would help.</p>

<p>Thanks alot</p>

2

<p>100 g Zn / 65 g Zn (molar mass) x 1 mol ZnCl2 / 1 mol Zn = 1.54 mol ZnCl2</p>

<p>100 g HCl / 36 g HCl (molar mass) x 1 mol ZnCl2 / 2 g HCl = 1.39 mol ZnCl2</p>

<p>Therefore, HCl is the limiting reagent. </p>

<p>100 g HCl / 36 g HCl (molar mass) x 1 mol ZnCl2 / 2 g HCl x 135 g ZnCl2 / 1 mol ZnCl2 = 188 g ZnCl2</p>