How many moles of magnesium oxide are there in 2.50 * 10^25 formula units of MgO?

3. How many grams of CoCl, in 1/2 Liter would be used to make a 1.0 molar solution?

How many moles of hydrogen would be required to produce 10 moles of water?

Which of these is a generic name for a subatomic particle in the nucleus of an atom? A. nuclide B. nucleon C. isotope D. quark

Description of intensive property

What effect does evaporation have on the solubility of salt?

What are three facts about the carbon family

Which characteristic might identify a substance as an Arrhenius base? A) It contains an OH group. B) It contains hydrogen ions. C) It forms halogens. D) It will react with other bases.

The combining of hydrogen and oxygen gas into liquid water is an example of what kind of change? A. Phase B. Chemical C. Physical

Explain evaporation. have a chapter test tommarow!

When the system is at equilibrium, it contains NO 2 at a pressure of 0.817 atm, and N 2 O 4 at a pressure of 0.0667 atm. The volume of the container is then reduced to half its original volume.