IF 500 mL of air contains 2.50x10^22 particles (atoms and molecules). how much particles do you inhale in one day if you breath 15000L of air?

Energy stored and release in the nucleus of an atom

What is the mass of 6.10^8 molecules of water

Which of these elements has a smaller atomic#? chlorine, cadmium, neon

1. Alginate is a. Reversible Hydrocolloid impression material b. Irreversible Hydrocolloid impression material c. Polysulfideimpression material d. Polyvinyl siloxane impression material

In an illustration, lines of force are drawn around a magnet to illustrate the magnetic

The elements in Groups 1 AU) and 7A (17) are all quite reactive. What is a major difference between them?

A certain radioactive element has a half-life of one hour. if you start with 1.0 gram of the element at noon, how much of the radioactive element will be left at 2 p. m.? 0.50 grams 0.25 grams 0.125 grams 0.0 grams

Name two bases which react with dillute sulfuric acid to give zinc sulfate

What is the correct name for the compound nh4clo4?

What is the molality of a solution when 1.2 moles MgCl2 is stirred in 1000 grams of water?