Determine the pH of a 0.29M CH3NH3Clsolution at 25°C. The Kb for CH3NH2is 4.4× 10^-4 I keep getting pH= 14- 1.94707 but that is wrong

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

the objects have the same charge is correct.

nathan lee