Curious carl and his lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon dioxide. in one experiment, they added a piece of magnesium ribbon to 10 milliliters of hydrochloric acid. they observed bubbles being produced and did a variety of tests to identify the escaping gas; it proved to be hydrogen. the reaction is represented by the following equation:
mg + 2hcl → mgcl2 + h2(g)

what is the mass, in grams, of two moles of hcl?
a) 18.3 g
b) 36.5 g
c) 72.0 g
d) 73.0 g

73.0 grams is the mass of two moles of HCl.

Explanation:

Moles of HCl = 2 moles

Molar mass of HCl = 36.5 g/mol

n = number of moles

m = Mass of the given compound

M = molar mass of the compound

m =

73.0 grams is the mass of two moles of HCl.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.