What happens to water when it changes to ice
is it density increase

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.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.