You have 1.2 x 10^25 particles of NiCO3. How many grams are present?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several