1) Find the number of molecules for the following: a. 2.00 mol Fe
b. 4.5 mol cl
c. 0.25 mol K

2) Find the amount in moles for the following:
a. 4.30 x 10^16 atoms He
b. 5.710 x 10^23 molecules C
c. 3.1 x 10^24 particles Al

3) Find the mass in grams for the following:
a. 0.9316 mol Na
b. 6.65 mol Ca
c. 3.088 mol B

4) Find the amount in moles for the following:
a. 4.01 g F
b. 3.5 g Cu
c. 2.442 go

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.