Gypsium is used in drywall and plaster and occurs naturally in alabaster. It has the formula CaSO4*2H2O and its Ksp is 8.3*10^-8. What mass of gypsum is present in 254mL of saturated solution?

Which term best describes the form sound takes as it travels away from a drum (a- gas)(b-music) ( c-waves) (d-particles

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.

The reaction q+r2=r2q is found to be first order in r2 and