If 1.823 g of cobalt metal reacts with 0.495 g of oxygen gas,what is the empirical formula of the cobalt oxide product?

Question

Quizplus · Accepted Answer

To find the empirical formula, we need to first determine the moles of each element present.

moles of Co = 1.823 g / 58.93 g/mol = 0.0309 mol
moles of O = 0.495 g / 16.00 g/mol = 0.031 mol

The ratio between Co and O is approximately 1:1, which indicates that the empirical formula is CoO. Therefore, the answer is A) CoO.

If 1823 G of Cobalt Metal Reacts with 0