Use the standard enthalpies of formation for the reactants and products to solve for the ΔHrxn for the following reaction. (The ΔHf of HCN is 108.9 kJ/mol, AgCl is -127.068 kJ/mol, HCl is -167.159 kJ/mol and AgCN is 146.0 kJ/mol.)

HCl (aq) + AgCN (s) HCN (aq) + AgCl (s)

ΔHrxn =

The reaction is

The clouds are grey and ground is wet. a quantitative b qualitative

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.