1.) 22.5 grams of Potassium nitrate react with Sodium Bromide to produce how many grams of Potassium Bromide?

2.)Scandium (III) Sulfide reacts with solid Aluminum to produce 16.3 grams of Aluminum Sulfide,
how many grams of Scandium (III) Sulfide were used in the reaction?

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

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

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?