The nucleus of a radium-226 atom is unstable, which causes the nucleus to spontaneously
(1) absorb electrons (3) decay
(2) absorb protons (4) oxidize

Afamily is one another name for a group on the table of elements.

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml