Basic Chem Spring 15 Worksheet #1Sig Figs, Conversions, Dimensional Analysis

How many sig figs are in these numbers?

1)91010 _____

2)9010.0 _____

3)1090.0010 _____

4)0.00120 _____

5)3.4 x 104 _____

6)9.0 x 10-3 _____

7)9.010 x 10-2 _____

8)0.00030 _____

9)1020010 _____

10)780. _____

11) Solve the following expression:

12) Convert 40.0 L to L.

13)How many kilometers are there in 3.34 x 105 cm?

14)How many inches are there in 62 nanometers? (There are 2.54 centimeters in 1 inch.)

15)How many kilometers are there in 34 inches? (There are 2.54 centimeters in 1 inch.)

16) Convert 0.04 ML to mL.

17)How many centimeters are there in 1.23 x 10-6 kilometers?

18)How many milliliters are in a cubic meter?

19) Convert 4.49 kg/L to mg/mL.

20) Convert 4.49 kg/L to mg/mL.

21) Convert 5.95 106 g/m2 to lb/in2. (2.54 cm = 1 in., 1 lb = 453.6 g)

22) Solve the following expression: