9.114 Given the following mass percent compositions, determine the empirical formula. a.
47.26%Cu
and
52.74%Cl
b.
40.27%K,26.78%Cr
, and
32.96%O
c.
40.04%Ca,12.00%C
47.96%O
d.
28.03%Na,29.28%C,3.69%H
39.01%O