8. A sample of 16.0g of a metal oxide, MO, is reduced to 12.8g of the metal, M. What is the relative atomic mass, Ar, of M?

A 32 B 64 C 80 D 128

In all living cells dna controls cellular activities by

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore