Which law requires the balancing of a chemical equation?

The atomic radius of metal X is 125 picometers (pm) and a crystal of metal X has a unit cell that is face-centered cubic. Calculate the density of metal X (atomic weight = 42.3 g/mol).

Which of the following is a major difference between lactic acid and alcohol fermentation? Alcohol fermentation releases carbon dioxide, while lactic acid fermentation does not.

Determine the number of an atom I'm 3.62ml of mercury. the density of mercury is 13.5 g/ml

In which location would an ocean ridge most likely be located

What type of hydrogen bonds form between nitrogenous bases?

Which of the following will most likely happen if you apply unbalanced forces to an object? It will change position. It will become charged. It will change mass. It will change size.

Magnetism easily separates what mixture? A). Sand and glass B). Sand and iron C). Sand and clay D). Sand and aluminum

Match the science with the best description?

Can magnetism be used to identify a substance

Nitrogen dioxide dimerizes to give dinitrogen tetroxide: 2NO2 (g) → N2O4 (g). At 298 K, 12.55 g of an NO2/N2O4 mixture exerts a pressure of 0.963 atm in a volume of 6.92 L. What are the mole fractions of the two gases in the mixture?