Stoichiometry: S8 + 12 O2 → 8 SO3

How much sulfur trioxide (in grams) will form if 501.6 grams of sulfur reacts.

Work shown would be very helpful and greatly appreciated.

Find the mass in grams of 1.37x1020 particles of h3po4

Consider the reaction of a(g) + b(g) + c(g) => d(g) for which the following data were obtained: experiment initial [a], mol/l initial [b], mol/l initial [c], mol/l initial rate, mol/l.s 1 0.0500 0.0500 0.0100 6.25 x 10^-3 2 0.100 0.0500 0.0100 2.50 x 10^-2 3 0.100 0.100 0.0100 1.00 x 10^-1 4 0.0500 0.0500 0.0200 6.25 x 10^-3 what is the rate law for the reaction?

How do dying stars contribute to the formation of planets