Will give brainliest. Please show all calculations.

1. What is the percent composition of these compounds.
a. ethane (C₂H₆)
b. sodium hydrogen sulfate (NaHSO₄)

2. Calculate the percent nitrogen in these common fertilizers.
a. NH₂
b. NH₄NO₃

The electromagnetic force acts between what

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

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