The decomposition by heating of solid potassium chlorate yields solid potassium chloride and oxygen gas as products. Write a balanced equation for this reaction.
a) KCIO, -KCI(s) + 2 029)
b) 2 KCIO,(s) - 2 KCl(s) + 3 0(9)
c) KCIO (S) - KCl(s) + 3 O(g)
d) 2 KCIO,(s) - 2 KCIO,(s) + O(g)
e) KCIO (S) - KCl(s) + 0 (9)

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Iknow #2 is d. i just need to know why

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?