Chemistry update 9/16 and homework due 9/23

Hi folks,

Today we spent quite a bit of time going over some basic math skills needed for class this year, such as, exponential notation, significant figures and metric prefixes. We also touched slightly on the concept of density which we will spend more time on next week.

Homework due 9/23

Read pgs. 1 - 16 in the text book.
Answer Review Questions #'s 5 - 21

Also, answer the following questions.

1. How many significant figures in the following numbers:

a. 23401

b. 34.003

c. .0085

d. 34000

2. Convert the following into exponential notation:

a. 23100000

b. 79.01

c. .000000429

3. Convert the following from exponential notation to normal notation:

a. 3.08 x 10^4 (^ means the following # is the exponent)

b. 9.086 x 10^-8