Intro to Chemistry Practice

Significant Figures

100

1.1+1.1

2.2

200

2.256/1

2

300

4.2x3.532

15

400

432/2.355

183

500

5.1x2

10

Scientific Notation

100

6.3x10³=

6300

200

5400=

5.4x10³

300

8800000=

8.8x10⁶

400

9.9x10⁷=

9900000000

500

55000000=

5.5x10⁷

Metric Conversions

100

How many cm in 3.7 km? 

370000 cm

200

How many km in 47 m 

.047 km 

300

How many hectaseconds are in 3000 milliseconds? 

0.03 hs

400

How many grams is 1530 mg? 

1.53 g 

500

How many kL is in 440000 mL

.44 kL

Dimensional Analysis

100

How many seconds are in a day?

60 seconds a minute

60 minutes in an hour

86400

200

How many hours are in a year?

24 hours a day

365 days a year

8760

300

How many feet are in a 5 yards?

3 feet=1yard

15

400

How many feet are in a kilometer? 

3280.84

500

How many meters in a mile? 

1609.34 m 

Temperature Conversions

100

30c —> F

86f

200

60c —> f

140f

300

140f —> c

60c

400

80c —> K

353.15 K 

500

136f  -> K

331 or 330.9K