Intro to college chemistry Quiz 03

Express 30529000 in scientific notation.

3 × 10^7

305290 × 10^7

30529 × 10³

3.0529 × 10^7

305 × 10^7

3.0529 × 10^7

Express the number 178414 in scientific notation.

1.78414 × 10^-5

1.8 × 10^-5

178.414 × 10³

1.78414 × 10⁵

1.78 × 10⁵

1.78414 × 10⁵

Convert 91.1 L = ? mL.

9.11 mL

9.11 × 10^-1 mL

9.11 × 10⁴ mL

9.11 × 10³ mL

9.11 × 10^-2 mL

9.11 × 10⁴ mL

Convert 0.5200 L to centiliters.

520.0 cL

5.200 cL

0.05200 cL

52.00 cL

0.005200 cL

52.00 cL

Convert : 0.00581 cm = ? mm.

0.581 mm

5.81 × 10^-5 mm

5.81 × 10^-2 mm

5.81 × 10^-4 mm

5.81 mm

5.81 × 10^-2 mm

Convert: 443.2 mm = ? m.

0.4432 m

44.32 m

4.432 m

4.432m

4.432 × 10⁵ m

4.432 × 10⁴ m

0.4432 m

4.1 milliseconds is equal to how many seconds?

4.1 × 10^-2 s

0.41 s

4.1 x 10^-3s

4.1 × 10² s

4.1 × 10^-3 s

The number of milliliters in 45.6 cm³ is ?

4560 mL

4.56 mL

0.0456 mL

None of these

45.6 mL

45.6 mL

Convert 5.87 kg to pounds (1lb = 453.6 g).

2.66 lb

1.29 × 10^-2 lb

12.9 lb

2662.63 × 10³ lb

2.66 × 10⁶ lb

12.9 lb

Convert 786.5 mi to kilometers (1 m = 1.094 yd; 1 mi = 1760. yd ).

1.265 × 10⁶ km

4.889 × 10^-4 km

860.4 km

4.469 × 10^-1 km

1.265 × 10³ km

1.265 × 10³ km

Express 1230000 in scientific notation.

1.23 × 10⁶

Convert: 8.21 × 10² g = ? kg.

0.821 kg

Using the rules of significant figures, calculate the following: 30 + 4.207.

30

Using the rules of significant figures, calculate the following: 54.34 + 45.66

100.00

2.4 cm

Convert: 7.7 mm = ? km

7.7 × 10^-6 km

Using the rules of significant figures, calculate the following: 15.9700 - 3.0

13.0

Using the rules of significant figures, calculate the following: 0.802 - 0.6

0.2

Convert: -38.0 degrees C = ? degrees F

36.4 degrees Fahrenheit

The temperature in the laboratory is posted as 251 K. What is this temperature in degrees Celsius?

-22 degrees Celsius.