Can someone answer all of these with the work shown? 100 points if you answer it. The density of hydrogen is 9.00 x 10-2 g/L. What will be the mass of 100 liters?

What volume will 1.5 x 1023 molecules of oxygen occupy at STP?

Measured at STP 33.6 liters of NO gas represents how many moles?

The density of a gas is 1.26 g/L at STP. What is the mass of I mole? What could this gas be?

The mass of I liter of a gas at STP is 2.75 g. Calculate the molecular mass.

C. N₂ + 3H₂ → 2NH₃
In a redox, or oxidation-reduction, reaction, one of the reactants must be reduced, which means its oxidation number decreases, while the other reactant must be oxidized, which means its oxidation number increases. The oxidation number of nitrogen in the reactants is 0 and is -3 in the products, so it is reduced. Similarly, the oxidation number of hydrogen is 0 in the reactants but it is +1 in the products.