Chapter 3 Test

Chapters 3 Test
MULTIPLE CHOICE

Select the answer that best completes the statement or that correctly answers the question.

1. Which of the following is the correct scientific notation for the value 5,545.98?
a. 55.4598 x 102
b. 55.4598 x 10-2
c. 5.54598 x 103
d. 5.54598 x 105

2. Which of the following is the correct scientific notation for the value 0.0001023?
a. 102.3 x 106
b. 1.023 x 10-3
c. 102.3 x 10-6
d. 1.023 x 10-4

3. The atomic mass of Hydrogen is 1.00797 amu. How many significant figures does that number have?
a. 6
b. 4
c. 5
d. 1

4. Light travels with the speed of 299,790,000 meters per second. How many significant figures does that speed have?
a. 9
b. 5
c. 4
d. 6

5. Which should be reported for the operation 35.0520 ÷ 15.27?
a. 2.2954 …show more content…
2.2954
b. 2.296
c. 2.295
d. 2.2955

6. Which should be reported for the operation 221 × 15?
a. 3315
b. 3320
c. 3400
d. 3300

7. Which should be reported for the operation 15.252 – 7.13?
a. 8.12
b. 8.122
c. 8.1220
d. 8.1

8. Which should be reported for the operation (2.0 x 103) × (4.1 x 104)?
a. 8.2 x 10-1
b. 8.2 x 107
c. 0.49 x 107
d. 0.49 x 10-1

9. Which should be reported for the operation (22.0 x 106) ÷ (4.00 x 104)?
a. 5.5 x 1010
b. 5.5 x 102
c. 5.5 x 10-2
d. 5.5 x 1024

10. How many Kiloliters are there in 30,000 milliliters (30,000 mL = ______KL)?
a. 30,000,000,000 KL
b. 3 KL
c. 0.3
d. 0.03

11. How many centimeters are there in 3 hectometer (0.023 hm = ______cm)?
a. 0.0230 cm
b. 0.000023 cm
c. 2.3 cm
d. 230 cm

12. A gold ring has a mass of 12.0 grams. When it is submerged in a graduated cylinder, it displaces the volume by 0.621 mL. What is the density of gold?
a. 19.3 g/mL
b. 1.61 g/mL
c. 7.45 g/mL
d. 12.6 g/mL
13. The melting point of potassium thiocyanate determined by a student in the laboratory turned out to be 174.5 oC. The accepted value of this melting point is 173.2 oC. What is the percent