Which of the following of the following is the same for both hydrogen and potassium ? a. atomic mass b. total mass of neutrons c. number of valence electrons d. number of filled energy levels

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

Which statement best describes what happens when molecular compounds melt