help with chemistry?

Question

Please help with Chemistry problems?
I need help with the following 2 problems. Please show how you got the work.

1.Calculate the masses of 0.005 mol Pb(NO3)2 and 0.005 mol oft K2CrO to 0.01 g.

2.The exhaled carbon dioxide produced as a normal waste product of metabolism must be removed from the cabins of space vehicles. On the space shuttle, CO2 is removed from the cabin air by lithium hydroxide, which reacts as follows:

2 LiOH(s) + CO2(g) -----------> Li2CO3(s) + H2) (l)

What mass of CO2 can be removed from the atmosphere by 1.00 lb(454 g) of LiOH?

Answer 1

I think these are the correct answers. I won't show you how I got my answers, but I will tell you one integral piece of information: remember that the atomic weight is the # of grams in one mole of the element of interest. (I would like to see what you worked out.)

1) 1.663 g of Pb(NO3)2 in 0.005 mol
0.211 g of K2CrO in 0.005 mol

2) 417.210g of CO2 can be removed.

Please keep in mind that I could be wrong...it's been a bit since I've regularly done chemistry. Again, I want to know what you did, if you don't mind.