The half-life of tritium, or hydrogen-3, is 12.32 years. After about 37 years, how much of a sample of tritium will remain unchanged?

A. 1/3

B. 1/8

C. 1/16

D. 1/2

Hona owns 200 shares of Firm X stock. How many shares will she have after the recently declared 15% stock dividend is completed?

Why does carbon form so many organic compounds?

A bacterium is in a nasty environment. What sort of reproduction would it use in this situation? Why? How else would it protect itself? (hint: what were those special capsules called and why were they special?)

The number of protons in the nucleus is always equal to the number of neutrons. True or False?

If you increase the temperature of a gas, the pressure ...

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.