Calculate the activity coefficient for K^+ and SO4^2- in 0.02M solution of Potassium sulphate

The answer is 323 g.

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.

Answerit is not a renewable energy source;