Hey guys. whats with the account telling you to download a file. Is it dangerous?

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Which method would be best to separate a mixture of sand and gravel