Trisha and her 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) trisha and her lab partner filled a beaker with 150 milliliters of a 0.10 m hcl solution. how many moles of hcl are in the beaker? remember, molarity = moles liter . a) 0.015 mol hcl b) 0.150 mol hcl c) 6.67 mol hcl d) 15 mol hcl