Module 3.3 Percent Composition Flashcards
1
Q
What is the Percentage Composition of
Ca₃(PO₄)₂
A
MW = 310.18 (previous module)
%Ca = 3*40.08 / 310.18 * 100 = 38.76 %P = 2*30.97 / 310.18 * 100 = 19.97 %O = 8*16 / 310.18 * 100 = 41.27
2
Q
What is the Percentage Composition of
C₃H₂O₂Cl
A
MW = 108.52 (previous module) 3 C * 12.01= 36.03 5 H * 1.008 = 5.04 2 O * 16 = 32 1 Cl * 35.45 = 35.45
%C = 36.03 / 108.52 * 100 = 33.20
% H = 5.04 / 108.52 * 100 = 4.64
%O = 32 / 108.52 * 100 = 29.49
%Cl = 35.45 / 108.52 * 100 = 32.67