Water vapor high in the Air cools down and comes together to for clouds and eventually rain. This is an example of Which change of state

Carbon-14 forms nitrogen-14 by a. alpha decay. b. beta decay. c. gamma decay. d. none of the above

Why was the magnesium put in a copper basket? (Why not some other metal?)

A way measurable or visible way of describing something

What is the mass of 6.14x10^25 atoms of gold

Which element would most likely have a positive electron affinity?

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.