If 100g of Au-198 decays to 6.25g in 10.8 days, what is the Half-Life of Au-198.

Use Ae = Ao (.5) ^ t / t1/2

Potassium iodide will have which molecular configuration? Select one: a. bent b. linear c. tetrahedral d. triangular

What kind of changes cause iron to rust?

Which of the following is a unit of heat? 1. Fahrenheit 2. Energy 3. Joule 4. Celsius

A chemist is making 200 l of a solution that is 62% acid. he is mixing an 80% acid solution with a 30% acid solution. how much of the 80% acid solution will he use?

1A, 3B, and 7A are examples of what on the periodic table?

How is measuring the volume of liquids different than measuring the volume of regular-shaped solids?

Which of the following best describes the motion of the particles in a piece of steel?

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

What does it mean when there are 2.3 x 10-4 moles?