How can you to prevent muscle mass loss as you age?
a. maintain a regular exercise program.
b. cut back on the amount of calories you eat during the day.
c. lift weights twice a week.
d. you can't prevent muscle mass loss; it's inevitable as you get older.

When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.