Q: Which of the following is the correct conversion factor to change meters to inches?

$$1\ \text{in} = 2.54\ \text{cm}$$

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

$$1\ \text{L} = 1\ \text{dm}^3$$

Question 1

Which of the following is the correct SI unit for measuring electric current?

Accepted Answer

Ampere (A)

Question 2

A patient’s body temperature is measured as 100.4 $$^\circF. $$What is this temperature in Kelvin? Use the formulas: $$T_{	ext{C}} = \frac{5}{9}(T_{	ext{F}} - 32)$$ and $$T_{	ext{K}} = T_{	ext{C}} + 273.15.$$

Accepted Answer

$$310.15\ 	ext{K}$$

Question 3

Which laboratory instrument would you use to most accurately measure 25.00 mL of a solution?

Accepted Answer

Pipette

Question 4

A cube has sides of length 2 cm. What is its volume in milliliters (mL)? Recall that $$1\ 	ext{cm}^3 = 1\ 	ext{mL}.$$

Accepted Answer

$$8\ 	ext{mL}$$

Question 5

Which prefix represents $$10^{-6}$$?

Accepted Answer

Micro

Question 6

A student measures the mass of an object three times and gets values that are very close to each other but far from the true value. Which of the following best describes the measurements?

Accepted Answer

Poor accuracy, good precision

Question 7

Convert 0.025 kilometers to centimeters. (Use $$1\ 	ext{km} = 10^5$\ 	ext{cm})$$

Accepted Answer

$$2,500\ 	ext{cm}$$

Question 8

A graduated cylinder contains 60 mL of water. After a rock is submerged, the water rises to 75 mL. What is the volume of the rock?

Accepted Answer

$$15\ 	ext{mL}$$

Question 9

Which of the following is the correct conversion factor to change meters to inches?

Accepted Answer

$$1\ 	ext{in} = 2.54\ 	ext{cm}$$

Question 10

A bottle of aspirin contains 200 tablets, each with a mass of 325 mg. What is the total mass of aspirin in grams? (Use $$1\ 	ext{g} = 1000\ 	ext{mg})$$

Accepted Answer

$$65\ 	ext{g}$$

Question 11

Which of the following best describes the term 'mole' in chemistry?

Accepted Answer

A unit for measuring the amount of substance

Question 12

A nurse needs to administer 7.5 mL of Tylenol to a child. Which device should be used for the most accurate measurement?

Accepted Answer

Syringe

Question 13

Which of the following is the correct relationship between liters and cubic decimeters?

Accepted Answer

$$1\ 	ext{L} = 1\ 	ext{dm}^3$$

Question 14

A cup of coffee is served at 60 $$^\circC. $$What is this temperature in Fahrenheit? Use $$T_{	ext{F}} = \frac{9}{5}T_{	ext{C}} + 32.$$

Accepted Answer

$$140\ ^\circ	ext{F}$$

Question 15

Which of the following best describes a measurement that is both accurate and precise?

Accepted Answer

Measurements are close to the true value and close to each other

Question 16

Which prefix would you use to express a mass of $$0.000001$$ grams?

Accepted Answer

Micro

Question 17

A scientist needs to prepare exactly 1.00 L of a solution. Which piece of glassware should be used?

Accepted Answer

Volumetric flask

Question 18

Which of the following is the correct SI unit for luminous intensity?

Accepted Answer

Candela (cd)

Question 19

A carton contains one dozen eggs. In chemistry, which concept is most similar to a 'dozen'?

Accepted Answer

Mole

Question 20

Which of the following is the correct meaning of the prefix 'nano-'?

Accepted Answer

$$10^{-9}$$

Chemistry and Measurements: Study Notes for GOB Chemistry

Guida di studio - Domande di pratica

Study guide - Flashcard