Why might one substance be soluble in another, even though it has a positive heat of solution?

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.

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

How have the greenhouse gasses increased from the year 2000 to 2018