Question 1

Which of the following measurements are not equivalent?

Accepted Answer

A)  25 mg = 0.025 g
B)  183 L = 0.183 kL
C)  150 ms = 0.150 s
D)  84 cm = 8.4 mm
E)  24 dL = 2.4 LF) A) and E)
G) None of the above

Question 2

Round off each of the following to three significant figures.
-6.3477 × 104

Accepted Answer

Question 3

How many centimeters are there in 57.0 in.?

Accepted Answer

A)  22 cm
B)  0.0445 cm
C)  145 cm
D)  22.4 cm
E)  140 cmF) B) and D)
G) C) and E)

Question 4

State the number of significant figures in each of the following measurements.
-6.1 × 10-5 mL

Accepted Answer

Question 5

What is the metric relationship between grams and micrograms?

Accepted Answer

A)  1 g = 100 μg
B)  1 g = 1 000 000 μg
C)  1 g = 0.000 001 μg
D)  1 g = 1000 μg
E)  1 g = 0.001 μgF) A) and E)
G) B) and D)

Exam 2: Chemistry and Measurement

What is the metric relationship between grams and micrograms?