What is the molar mass difference of CaCO3 and NH4NO2? Use 0:12, Ca:40, 0:16, N:14 A)100
B)80
C)10
D)20

An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms

One or more substances changing into one or more substances is an example of a

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg