Q: Which of the following is the correct relationship between milliliters and liters?

$$1\ \mathrm{mL} = 1 \times 10$$^{-3}$$\ \mathrm{L}$$

Question 1

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture in which the composition is uniform throughout, such as air or saltwater.

Question 2

Which of the following is a correct classification for table salt (NaCl)?

Accepted Answer

Pure substance, compound

Question 3

Which of the following statements about elements and compounds is TRUE?

Accepted Answer

A compound contains two or more elements chemically combined in a fixed ratio.

Question 4

Which of the following is a physical change?

Accepted Answer

Ice melting to form liquid water

Question 5

Balance the following chemical equation: $$\mathrm{C_2H_6 + O_2$ \rightarrow CO_2$ + H_2O}$$

Accepted Answer

$$\mathrm{2\ C_2H_6 + 7\ O_2$ \rightarrow 4\ CO_2$ + 6\ H_2O}$$

Question 6

A patient receives a prescription for 10 mg/kg of a drug. If the patient weighs 66 lb, how many milligrams should be administered? (1 kg = 2.2 lb)

Accepted Answer

300 mg

Question 7

Which of the following is the correct relationship between milliliters and liters?

Accepted Answer

$$1\ \mathrm{mL} = 1 	imes 10$$^{-3}$$\ \mathrm{L}$$

Question 8

How many significant figures are in the measurement 0.00340 g?

Accepted Answer

3

Question 9

Convert 0.025 L to microliters ($$\muL).$$

Accepted Answer

25,000 $$\muL$$

Question 10

A sample of urine has a specific gravity of 1.020. What is its density in g/mL?

Accepted Answer

1.020 g/mL

Question 11

Which of the following best describes the difference between accuracy and precision?

Accepted Answer

Accuracy is how close measurements are to the true value; precision is how close measurements are to each other.

Question 12

Which of the following is a correct conversion factor for converting from kilograms to pounds?

Accepted Answer

$$1\ \mathrm{kg} = 2.2\ \mathrm{lb}$$

Question 13

A 10.0 g sample of a substance occupies 8.0 mL. What is its density?

Accepted Answer

$$1.25\ \mathrm{g/mL}$$

Question 14

Convert 37 $$^{\circ}C to $$Fahrenheit.

Accepted Answer

$$98.6\ ^{\circ}\mathrm{F}$$

Question 15

Which of the following is a property of gases but not solids or liquids?

Accepted Answer

Gases have no definite shape or volume and expand to fill their container.

Question 16

Which of the following is the correct scientific notation for 0.00056?

Accepted Answer

$$5.6 	imes 10$$^{-4}$$

Question 17

A nurse needs to deliver 500 mL of IV fluid using tubing with a drop factor of 20 gtt/mL at a rate of 100 gtt/min. How many hours will it take to deliver the fluid?

Accepted Answer

1.67 hours

Question 18

Which of the following is an example of a heterogeneous mixture?

Accepted Answer

Vegetable soup

Question 19

Which of the following is a micronutrient essential for human health?

Accepted Answer

Iron (Fe)

Chapter 1: Chemistry Basics—Matter and Measurement (GOB Chemistry Study Notes)

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