How many grams of oxygen are in 43.2 grams of calcium phosphate?
I got 17.79g. Because there are .139mol of the Ca3 (PO4)2 compound and then multiply that by the molar mass of O8 because of (PO4)2 makes eight oxygens. Anything wrong?
- Anonymous1 decade agoFavorite Answer
Looks right to me, that is approximately what I got.
- Anonymous4 years ago
do no longer get fooled by using the formulation of CaPO4. look specifically on the question and undertaking your self with the question. what's the grams of Oxygen ? CaPO4 in basic terms takes place to have 4 atoms of Oxygen so multiply the burden of O by using 4 atoms 16g x 4 = sixty 4 g
- 1 decade ago
Look Atomic wt of oxygen is 16, Ca is 40 and P is 30.97
Formula of calcium phosphate is Ca3(PO4)2
Now do molecular mass=(40*3)+((30.97+(16*4))*2)
In which oxygen weigh= (16*4)*2=128 gm
so, if 309.94 gm contain 128 gm oxygen, then 43.2 gm of calcium phosphate contain x gm of oxygen.
x=(43.2*128)/309.94=17.84 gm of oxygen