Explain why mass cannot be used as a property to identify a sample of matter.

What describes Rutherford's model of the atom?

Helium is an inert gas that does not react with other substances to form compounds. Would it be correct to say that helium has no chemical properties?

Which statement explains the periodic table and how is arranged. A. the periodic table is arranged by decreasing atomic mass. B. the periodic table is arranged by radioactivity levels in unstable nuclei of elements. C.

If you have 100.0ml of a 30.0% aqueous solution of ethanol, what volume of water is in the solution?

Given the reaction at equilibrium: N2 (g) + O2 (g) ↔2NO (g) as the concentration of N2 (g) increases, the concentration of O2 (g) will: a) decrease b) increase c) remain the same

In an experiment to test a new drug's effectiveness, one group is given a larger dosage than is typically prescribed, and a second group is given a smaller dosage than is typically prescribed.

Waves move out through the ground from the source of an earthquake. True or false

The 14C content of a wooden harpoon handle found in the remains of an Inuit encampment in western Alaska is 61.9% of the 14C content of the same type of wood from a recently cut tree. How old is the harpoon?

What are the uses of crude oil?

Chemical formula for urea?