Explain why the atomic mass of a particular isotope of an element differs from the average atomic mass of that element.

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

How does concentration affect reaction rate

What is the molar mass of ca(cio4)2