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

To convert from moles to mass for any molecule or compound you multiply the number of moles by the molar mass. A. True B. False

Which of these is a trait that has probably been selectively bred for by human beings? A. speed in horses B. breathing air in dolphins C. eating bamboo in panda bears D. flying in bats

As a skateboarder moves down hill some of the energy is

What is the molarity of a solution containing 0.5 mol of zinc sulfate (ZnSO4) per liter?

Choose all resonance structures of ocn - with right formal charges in each. check all that apply.

An unknown substance dissolves in water but it does not conduct electricity before or after it has dissolved.

21% of oxygen in air with barometric pressure of 625. what's partial pressure

Which situations will NOT increase the reactions rate of most chemical reactions A) an increase in temperature B) grind up the solute to increase surface area before mixing C) by increasing the pressure in which the reaction takes place D)

What are the three types of matter?

How might we create the best possible solution to a problem?