The theoretical yield of a reaction of 75.0 grams of product and the actual yield is 42.0 grams. What is the percent yield?

What is the formula for an  ionic compound  made of barium and nitrogen?

What are the coefficients for the following reaction when it is properly balanced?   ___O2 + ___CH4 → ___CO2 + ___H2O

1.201 × 10-7 in standard notation is:

What is the concentration of H⁺ (or H3O+) in  2.0 M acetic acid, HC2H3O2?

Which is the weakest type of radiation?

 Which of the following statements is TRUE for gases? 1.  The temperature of a gas is inversely proportional to its pressure. 2.  The volume of a gas is directly proportional to the pressure. 3.  The pressure of a gas is due to collisions of the gas molecules.

What is the volume (in liters) of 1.00 mole of krypton gas that has a pressure of 1.5 atmospheres and a temperature of 25.0°C? (R= 0.0821 L atm/ mol K)

What is the molality of a solution made by dissolving 0.082 mol of C6H12O6 into 0.150 kg of water?

What is the final concentration of a solution prepared by diluting 35.0 ml of 12.0 M HCl to a final volume of 1.20 L?