A class performed a chemical reaction by mixing 5.8 grams of AgNO3 (silver nitrate) with 2.0 grams of NaCl (sodium chloride). The reaction produced AgCl (silver chloride) and NaNO3 (sodium nitrate). Which graph shows the correct weights of the reactants and products?

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.