00:01
Of calcium and hydrochloric acid reacting to form calcium chloride and hydrogen gas.
00:06
So with that, if we have 9 .11 grams of hydrochloric acid, how much hydrogen gas can we produce? so we need to start with our balanced formula.
00:17
So calcium and then hydrogen acid are going to react form calcium chloride and hydrogen gas.
00:26
Remember, hydrogen gas is diatomic, so it's going to be h2.
00:29
I have two hydrogens on one side.
00:31
I need to have two hydrogens on the other side.
00:33
I have two chlorines on one side, and now i have two chlorines on the other side.
00:37
Then i have one calcium, one calcium.
00:39
I'm balanced.
00:40
We know that the mass of my hydrochloric acid is 9 .1 grams, and we're trying to figure out how much of my hydrogen gas can i produce.
00:53
Quickly, i'm going to find the molar mass of my hydrochloric acid.
00:58
So to find my molar mass, i'm simply going to find the molar mass on the periodic table of each element that make up my hydrochloric acid.
01:08
So on the periodic table, hydrogen is going to be a 1 .008 grams, and my chlorine is going to be a 35 .45 grams.
01:18
And so i'm just simply going to add those two together.
01:21
I'm just going to add them together.
01:22
I get 36 .458 grams per mole.
01:29
And then hydrogen, because again, it's diatomic.
01:34
So my molar mass of my diatomic hydrogen is going to be two of them...