What is the empirical formula of an unknown compound that contain 60.3% of magnesium and 39.7% of oxygen?

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.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

If two objects at different te,peraure are in contact with each other what happens to their temperature