Asked by Sam
How many total atoms are in 0.560 g of P₂O₅?
Answers
Answered by
DrBob222
molar mass P2O5 2*31 + 5*16 = estd 142
mols P2O5 in 0.560 g = g/molar mass = estd 0.004
So you have 2*0.004 = about 0.008 mols P
and 5 x 0.004 = about 0.02 mols O
Total mols = aout 0.008 + 0.2 = about 0.28
Now you know that 1 mol of anything has 6.02E23 anythings in it.
Remember all of these are estimates so you nee to redo all the calculations.
Post your work if you get stuck.
mols P2O5 in 0.560 g = g/molar mass = estd 0.004
So you have 2*0.004 = about 0.008 mols P
and 5 x 0.004 = about 0.02 mols O
Total mols = aout 0.008 + 0.2 = about 0.28
Now you know that 1 mol of anything has 6.02E23 anythings in it.
Remember all of these are estimates so you nee to redo all the calculations.
Post your work if you get stuck.
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