You are asked to burn a gas using a bunsen burner in order to boil water. which f he following has no mass? a. gas. b. heat. c. water. d. water vapor.

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?