What is the mass of 0.513 mol Al2O3? Give your

answer to the correct number of significant

figures. (Molar mass of Al2O3 = 102.0 g/mol)

0.513 mol Al2O3 = |

g Al2O3

Le Châtelier's principle states that increasing temperature favors a reaction that a. releases energy as heat. c. involves a chemical catalyst. b. requires energy as heat. d. involves an enzyme.

Suppose we have a 12.2litre sample containing 0.50M of oxygen at 25°c. If all of this oxygen (o2) is converted to ozone at the same temperature and pressure. What will be the volume of ozone?

A 58.0mL sample of a 0.122M potassium sulfate solution is mixed with 40.0mL of a 0.102M Lead (II) acetate solution and this precipitation reaction occurs: K2SO4 (aq) + Pb (C2H3O2) 2 (aq) →2KC2H3O2 (aq) + PbSO4 (s) The solid, PbSO4, is collected,

The size of symbols on a graph may be used to indicate what

Which is the correct name of the compound Cu3N2?

How should scientist respond when new evidence that challenges current is presented?

Consider the following reaction, equilibrium concentrations, and equilibrium constant at a particular temperature. Determine the equilibrium pressure of H2. D2 (g) + H2 (g) ⇌ 2 HD (g) Kp = 1.80 P (D2) eq = 1.1 * 10-3 atm P (HD) eq = 2.7 * 10-3 atm

Find δe for the change in state of 1.0 molh2o (l) at 79 ∘c to h2o (g) at 116 ∘c. the heat capacity of h2o (l) = 75.3 j/molk, heat capacity of h2o (g) = 25.0 j/molk, and the heat of vaporization of h2o is 40.7*103j/mol at 100 ∘c.

Balloon A started with a volume of 1.76 L. The temperature of the room the balloon was in was 295 K. The balloon was heated to a temperature of 253.15 K. What is the new volume?

The standard internal energy change for a reaction can be symbolized as ΔU°rxn or ΔE°rxn. For the following reaction equations, calculate the energy change of the reaction at 25 °C and 1.00 bar. Sn (s) + Cl2 (g) - - - > SnCl4 (l) + H (KJmol) - 511.3.