As we go down a group the number of valence electrons?
a Increases
b Decreases
C Remains the same
d None of the above

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.

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

How to convert a density of 0.791g/cm3 to lb/ft3