Question

what volume of hydrochloric acid of density 1.18g cm3 and containing35.0% by mass must be allowed to react with zinc in order to liberate 6.36g H2 gas?

can you tell me the steps. i get so confused with this topic.

Answer 1

I don't know how you came up with a title of molality.
Here is a stoichiometry problem (that's this type) I've posted as an example. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html

Answer 2

the molality possibly should have been molarity. i am getting the two confused at the moment. this is a revision question in my topic on solutions.

Answer 3

I call this a stoichiometry problem.