A. Cu2O
B. CuO
C. CuO2
D. CuO4

Correct Answer: Option B

Explanation

Cu : O

0.067 : 0.066

mole ratio 0.067/0.066 : 0.066/0.066

= 1 : 1

= CuO

SEE ALSO  If the relative molecular mass of an element is not a whole number, it can be deduced that the element is?

Copyright warnings! Do not copy.