Answer:
The reaction between zinc and hydrochloric acid produces hydrogen gas according to the following equation:
Zn + 2HCl → ZnCl2 + H2
This equation tells us that 1 mole of zinc reacts with 2 moles of hydrochloric acid to produce 1 mole of hydrogen gas. The molar mass of zinc is 65.38 g/mol, and the molar mass of hydrogen is 1.008 g/mol.
Using this information, we can set up the following proportion to find the number of grams of zinc needed to produce 8.08 grams of hydrogen:
1 mole Zn / 2 moles H2 = 65.38 g Zn / 1 mole Zn
x grams Zn / 8.08 g H2 = 65.38 g Zn / 1 mole Zn
Solving for x, we get:
x = (8.08 g H2) x (1 mole Zn / 2 moles H2) x (65.38 g Zn / 1 mole Zn)
x = 261.7 g
Therefore, you would need 261.7 grams of zinc to produce 8.08 grams of hydrogen.
Step-by-step explanation: