Plllzzz !

how many grams of iron are produced when 425 g of iron (iii) oxide (fe2o3) are reacted?
fe2o3 + 3 h2 --> 2fe + 3h2o
1mol fe2o3= 159.6 g fe2o3
1mol fe=55.8 g fe

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

How many moles are contained in 5.6 l of h2 at stp

Given the data below for the reaction, 2 a + 2 b + 4 c => d + e + 3 f, the reaction is fill in the [ ] order in a, fill in the [ ] order in b, fill in the [ ] order in c and fill in the [ ] order overall. (use the words "first, second, third, fourth" to fill each blank)experimentinitial conc of a, mol/l initial conc of b, mol/l initial conc of c, mol/l initial rate, mol/l.s1 0.1 0.1 0.2 2 x 10-32 0.2 0.3 0.2 6 x 10-33 0.3 0.1 0.2 2 x 10-34 0.4 0.3 0.4 1.2 x 10-2