Why is cn considered a weak base if its the conjugate base of a weak acid?

How many grams of mgbr2 are needed to produce 75g or metal?

What is the effect of returning nuclear reactor cooling water back into bodies of water?

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.