A chemist was observing the outcome of a chemical reaction that requires 10mL of hydrochloric acid (HCl), 0.5 mg of zinc and 2ml of water. The chemist decided to see what would happen to the reaction if the amount of zinc was tripled. How much of everything would be required if the ratio of the components of the reaction must stay the same?

Question

anonymous · Answer

Water is special in that if you have a mL of water at room temperature it weighs a gram:
$$1 \ g \ H_2O = 1 \ mL \ H_2O$$
That's the trick you're looking for I think @Rushwr ? :D

anonymous · Answer

Oh maybe I'm misreading the question, but can we just take these values: 10mL of hydrochloric acid (HCl), 0.5 mg of zinc and 2ml of water

and multiply them each all by 3 to get:

30mL of hydrochloric acid (HCl), 1.5 mg of zinc and 6ml of water

To make sure that  the ratio of the components of the reaction must stay the same?