The amount of Zinc (at. Wt=65) necessary to produce 224 ml of H2 by the reaction with an acid will be______?
A7.5gm
B0.65gm
C0.065gm
D6.5gm
Correct answer
A. 7.5gm
Explanation
7.5gm is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.