Elephants can communicate over great distances. They use sound with very low
frequency (5 cycles per second). If the speed
of sound at 20 °C is 340 m/s, how long is the
wavelength of an elephant call at a frequency
of 5 cycles per second?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

How many molecules are found in 1.32 mol of nacl?