What do we call compounds that will not dissolve in water

What is the final volume in milliliters when 0.918 L of a 44.0 % (m/v) solution is diluted to 21.8 % (m/v) ?

When an alkali metal is involved in a chemical reaction with a nonmetal, what charge will its atoms most likely form? 1- 2+ 1+ 2-

Which of the following uses the relationship between the DNA of various groups of organisms to determine how long ago they diverged evolutionarily from one another? Carbon dating Fossils Timelines Molecular clocks

Which of the following elements has the fewest valence electrons?. a. beryllium. b. boron. c. carbon. d. lithium

The [H3O+] in a cabernet sauvignon wine is 5.9 ' 10-4 M. What is the [-OH] in this wine?

The osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant RSuppose the osmotic pressure of a certain solution is measured to be 22. atm at an absolute temperature of 353.

Which one of the following is a redox reaction?. 2 Na (g) + Cl2 (g) 2 NaCl (s) A. K2Cr2O7 (aq) + 2 KOH (aq) 2 K2CrO4 (aq) + H2O (l) B. H2O (l) H + (aq) + OH - (aq) C. Na2CO3 (s) + 2 HCl (aq) 2 NaCl (aq) + CO2 (g) + H2O (l) D.

Name 4 common chemical properties of matter

Why is photosynthesis so important to plants, and can't animals use it?

One way the government of Kim Jong-il controls the lives of the people who live in North Korea is by a. requiring every citizen to vote. b. controlling information its people receive from the outside world. c. enforcing free trade with other nations.