00:01
In this problem, it is asked that what mass of phosphorus is present in 5 moles of each of the compounds in exercise 52.
00:11
Right.
00:12
So here one mole of p406 is given.
00:16
So one mole of p406 contains, you can say, it contains four moles of phosphorus, right? isn't it? because here it is 4.
00:32
P4 is given, right? so that means there is 4 moles of cost of.
00:40
So we are asked to find out that therefore 5 moles will contain what? 5 moles of p4 .06.
01:06
Right.
01:07
So here it is asked that 5 moles of any compound.
01:10
So 5 moles of p4 .06 will contain what? it will contain 4 into 5.
01:21
That is actually equals to 20 moles of phosphorus.
01:33
Right.
01:34
So if we got the number of moles for phosphorus, then we can easily calculate the mass.
01:42
So mass of phosphorus will be equals to moles into atomic of phosphorus, that is p.
02:07
Right so this is given by 20 moles we have already find out the number of moles right so this will be into 30 .973 which is the molar mass of phosphorus that is in gram per mole all right so this will give us the mass of phosphorus so that means this comes out to be 619 .4 .6 .19 .4 6 grams.
02:41
All right.
02:41
So this is our answer to this problem.
02:44
I hope you understood...