Which is the correct name of a compound that is formed by Si and O? silicon dioxide silicon trioxygen disilicon dioxygen monosilicon oxide

What is the mass of 3.75 moles of NaCI? (Na = 22.99g/mol, CI = 35.45 g/mol)

You mix 125 mL of 0.154 M CsOH with 60.0 mL of 0.456 M HF in a coffee cup calorimeter, and the temperature of both solutions rises from 24.4°C before mixing, to 35.9°C after the reaction.

Which of the following would not have the same number of valence electrons as the others? boron aluminum gallium selenium

If an ice cube melts at 0oc but water also freezes at 0oc, what is the difference between melting and freezing in terms of a. the energy involved in the phase changes and b. particles of the substances during the phase changes?

You are working in your laboratory and decide to do some cleaning. You find a test tube with some brown substance congealed at the bottom. You take a piece of iron wool to scrub it out, but cannot remove it.

Acid strength in a series of h-a molecules increases with increasing size of a. acid strength in a series of molecules increases with increasing size of. a. True b. False

Which elements are necessary to accomplish work? a) force, energy, displacement b) energy, cause, displacement c) force, cause, energy d) force, cause, displacement

Antacid tablets, such as tums, are mainly calcium carbonate. Calculate the mass of a tums tablet which contains 1000 mg of calcium.

Which water sources contribute to a river system? Check all that apply. groundwater lakes rivers streams watersheds

What is the most compressible at room temperature