Question

calculate the mass of the zinc that reacts with 4.11 g of hydrochloric acid to form 9.1 g of zinc chloride and 3.97 g of hydrogen gas

Answer 1

Answer:

8.87 grams

Explanation:

BY THE LAW OF CONSERVATION OF MASS

THE TOTAL MASS BEFORE AND AFTER REACTION IS THE SAME

SO NOW,

Mass of Zinc + Mass of HCl = Mass of Zinc Chloride + Mass of H2

$4.11 +x = 9.1 + 3.97$

$X = 8.87 gram$

$8.87 gram of zinc is required$

Answer 2

Answer:

zinc=8.96g

Explanation:

4.11+zinc=9.1+3.97  

4.11+zinc=9.1+3.97

zinc+4.11=(9.1+3.97)

zinc+4.11=13.07

zinc+4.11=13.07  

zinc+4.11−4.11=13.07−4.11

zinc=8.96

∴zinc8.96g+hydrochloric acid4.11g=zinc chloride9.1g+hydrogen gas3.97