00:01
In the given question, the mass of kno3 is given 45 gram.
00:08
The volume of water is given 295 ml and the density of water is given 0 .997 gram per ml.
00:20
We have to find the percent by mass of the solution.
00:24
So first we have to find the mass of water.
00:27
So the formula to calculate, the mass of water is as the density of water.
00:31
Is equal to mass of water divided by volume of water.
00:36
So we can rearrange this formula as the mass of water will be equal to density of water multiplied by volume of water.
00:44
So this is equal to 0 .997 gram per m l multiplied by 295 ml.
00:54
When we solve this, mass of water will be equal to 294 .115 gram.
01:01
Now we have to find the mass of solution...