(05.02 MC) How many moles of Na2SO4 are present in 284.078 grams of Na2SO4?

(05.04 MC) Based on the equation, how many grams of Br2 are required to react completely with 36.2 grams of AlCl3?2AlCl3 + 3Br2 → 2AlBr3 + 3Cl2

(07.01 LC) Which of the following happens during an exothermic chemical change?

(06.02 LC) What happens to the particles of a gas when the gas changes into a liquid?

(08.02 MC) A 0.0200 M NaCl solution was formed when 38.0 grams of NaCl was dissolved in enough water. What was the total volume of the solution formed?

(06.04 HC) Part 1. A chemist reacted 18.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 290. K and 1.5 atm.F2 + 2NaCl → Cl2 + 2NaFPart 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP.

Which of the following is a risk associated with barbiturate use:

Which of the following symptoms correspond with the effects of marijuana:

(07.05 MC) When a cube of manganese oxide was added to a solution of hydrogen peroxide, water and oxygen were produced. Manganese oxide was not used up in the reaction. Which of the following is likely to increase the rate of the reaction?

(06.01 LC) Based on the kinetic molecular theory, which of the following statements is correct about the particles in a sample of gas at a constant temperature and volume?