Air is a solution of 78% nitrogen, 21% oxygen and 1% other gases. Which part of this solution is the solvent?

After a car's engine has been running for a while, if you stand near the car's engine you can often feel heat coming from the engine as a result of a. radiation b. convection c. conduction

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (