The mass defect for the following reaction, (image) , is 0.00239 amu. (1 amu= 1.66x10^-27 kg) how much energy will this reaction provide?
1.19 x 10-22 kg m2/s2
1.32 x 10-38 kg m2/s2
3.57 x 10-13 kg m2/s2
4.41 x 1022 kg m2/s2

One of the reactions in a blast furnace used to reduce iron is shown above. how many grams of fe2o3 are required to produce 15.5 g of fe if the reaction occurs in the presence of excess co? a.11.1 g b.22.1 g c.30.0 g d.44.2 g

100mg magnesium reacts with 20ml of 1.0m hcl

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?