Contrast the energy transformation that occur in a electrical toaster oven and in an electrical fan.

The ph of a 0.24 m solution of dimethylamine is 12.01. calculate the kb value for dimethylamine.

A compound is 52.14% C, 13.13% H, and 34.73% O by mass. What is the empirical formula of the compound?

As matter changes it can what?

Why does the pH of the acid solution initially increase very slowly when metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds to completion?

6. What is a polyatomic ion? (You should also memorize the name, formula, and charge of the polyatomic ions listed in the lecture materials)

Samuel adds a teaspoon of salt to a glass of water. He notices that the song disappears. Samuel takes a sip to discover that the water taste salty. What kind of change has occurred?

How are the physical and chemical properties of atoms represented on the periodic table of elements

how do we know isotopes exist?

Is albinism a dominant or recessive trait

If T = dominant, and t = recessive, what would the genotypes be?