Asample of 30.00 grams of potassium phosphate was added to a solution containing 100.0 ml of 0.25 m calcium nitrate. calcium phosphate was precipitated according to the following reaction. 2k3po4(s) + 3ca(no3)2(aq) - ca3(po4)2(s) + 6kno3(aq) 2.25 grams of calcium phosphate were recovered. calculate the theoretical yield and the percent yield.
ethylene- c2h4 = 85.7% carbon and 14.3% hydrogen
find the atomic masses for each element and multiply it by the number of atoms in the compound, then add.
c- 12.0 * 2= 24.0
h- 1.00 * 4= 4.00
take the masses for each element and divide it by the total mass. then change the answer to get the percent.
c 24.0 / 28.0= .857 = 85.7%
h 4.00 / 28.0= .143 = 14.3%ethylene is 85.7% carbon and 14.3% hydrogen
. c) which measurement tools are used.
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