An unknown sample of chemical that was found by the FBI contains 0.0531 g of hydrogen, .5644 g of sulfur, and
1.6997 g of oxygen. What is the empirical formula for this
sample?

What is the number of moles in 15.0 g ash3?

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate, m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2

The excretory system, need answers for all: )