The freezing point of a substance is always the melting point of that substance.
A.) lower than
B.) higher than
C.) the same as
D.) it depends on what the substance is.

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

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.

How much energy is made when a pice of wood burns. how do you know