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

In a solution, the part that does the dissolving is called the a. solvent. b. solute. c. suspension. d. dissolver.

Active transport requires chemical energy. True False

How many elements are in oxygen

A student measures the mass of a beaker filled with corn oil. the mass reading averages 215.6 g. the mass of the beaker is 110.4 g. a. what is the mass of the corn oil? b. what is the density of the corn oil if its volume is 114 cm3?

A 500 gram piece of metal has a volume of 2.75 cm3. what is the density

What does berkelium react with

Classifying living things

Find the parent acid and parent base of al2 (co33, determine if they are strong or weak, and determine if the salt is acidic, basic, neutral, or unpredictable.

A syringe contains 589 mL of CO at 325 K and 1.2 atm pressure. A second syringe contains 473 mL of N2 at 298 K and 2.6 atm. What is the final pressure if the contents of these two syringes are injected into a 1.00 L container at 0.00°C?

Which pair of elements can form an ionic compound? A) Two atoms of hydrogen B) One atom of sodium and one atom of fluorine C) One atom of calcium and one atom of chlorine D) Two atoms of hydrogen and one atom of oxygen