A compound contains only C, H, and N. Combustion of a 40.28 g sample of the compound produces 38.46 g of carbon dioxide, 47.25 g of water, and some nitrogen gas. A separate experiment determines the molecular mass of the compound to be 138.3 g/mol. Determine the empirical formula and molecular formula for the compound.

What type of reaction is zn + cucl2 → cu + zncl2?

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.