00:01
To calculate the number of nitrite ions found in 800 ,58 grams of cobalt to nitrite, we'll start with that mass of cobalt, actually cobalt 3 nitrite.
00:18
So it's cono2, that's nitrite.
00:23
With a 1 minus charge, we'll need three of them to cancel the 3 plus charge on the cobalt.
00:29
First, we convert the grams into moles using the molar mass of cobalt 3, nitrite, 1 mole, is the mass of 1 mole cobalt, or 3 moles nitrogen, and 6 moles hydrogen, or 6 moles oxygen, giving us 1096 .95 grams for every 1 mole.
00:56
Then we see from the chemical formula that one mole, co, no2, 3 contains 3 moles, nitrite, no2 minus...