Question

How many milliliters of calcium, with a density of 1.55 g/mL, are needed to produce 12.4 grams of hydrogen gas in the single replacement reaction below? Be sure to show the work that you did to solve this problem.

Unbalanced equation: Ca + HF CaF2 + H2

Answer 1

well first of all you should balance out the equation first

Answer 2

Ca + 2 HF = CaF2 + H2

Answer 3

ok now find out the ratio of base to acid

Answer 4

which would be 1:2

Answer 5

Could you tell me the answer?

Answer 6

what do you mean?

Answer 7

The answer, so I can be sure of my solution.

Answer 8

i dont have it its not MC

Answer 9

H2 = 2.

12.4/2 = 6.2

What's the atomic weight of calcium? AWC * 6.2 * 1/2 * 1/1.55.

But I am not really sure of my answer. Never been strong at chemistry :/

Answer 10

AWC for Atomic Weight Calcium.

Answer 11

40. 07