Calculate the percent ionization of nitrous acid in a solution that is 0.152 M in nitrous acid. The acid dissociation constant of nitrous acid is

What volume of a 0.716 M KBr solution is needed to provide 35.5 g of KBr?

Complete the following equation of nuclear fusion. H + H → He + ______

Calculate the ΔG°rxn using the following information. 4 HNO3(g) + 5 N2H4(l) → 7 N2(g) + 12 H2O(l) ΔG°rxn = ? ΔG°f (kJ/mol) -73.5 149.3 -237.1  

Express the equilibrium constant for the following reaction. 7 H2(g) + 7 Br2(g) ⇌ 14 HBr(g)

For the following example, identify the following. 2 I2(g) + O2(g) → 2 I2O(g)

If we start with 1.000 g of cobalt-60, 0.237 g will remain after 11.0 yr. This means that the of is ________ yr.

A rock contains 0.153 mg of lead-206 for each milligram of uranium-238. The for the decay of uranium-238 to lead-206 is 4.5 × 109 yr. The rock was formed ________ years ago.

Determine the identity of the daughter nuclide from the alpha decay of Th.

Calculate ΔS°rxn for the following reaction. The S° for each species is shown below the reaction. N2H4(l) + H2(g) → 2 NH3(g) S° (J/mol∙K) 121.2 130.7 192.8