Q: Convert $$3.50 \ \mathrm{Gbytes} to$$ $$\mathrm{kbytes}$$, using the correct number of significant figures.

$$3.50 \times 10^6$ \ \mathrm{kbytes}$$

Q: Which of the following is the correct equivalence statement for converting $$1 \ \mathrm{cm^3$} to$$ $$\mathrm{m^3$}$$?

$$1 \ \mathrm{cm^3$} = 1 \times 10$$^{-6}$$ \ \mathrm{m^3$}$$

Question 1

Which of the following is the correct SI base unit for measuring temperature?

Accepted Answer

Kelvin (K)

Question 2

A sample of gold has dimensions 2.00 cm × 3.00 cm × 4.00 cm. If the density of gold is $$19.32 \ \mathrm{g/cm^3$}$$, what is the mass of the sample in grams?

Accepted Answer

$$232 \ \mathrm{g}$$

Question 3

Which of the following statements about significant figures is TRUE?

Accepted Answer

Zeros at the end of a number are significant only if a decimal point is present.

Question 4

Convert $$3.50 \ \mathrm{Gbytes} to$$ $$\mathrm{kbytes}$$, using the correct number of significant figures.

Accepted Answer

$$3.50 	imes 10^6$ \ \mathrm{kbytes}$$

Question 5

A student measures the mass of a sample three times and records: $$2.48 \ \mathrm{g}$$, $$2.49 \ \mathrm{g}$$, $$2.47 \ \mathrm{g}. $$The true mass is $$2.50 \ \mathrm{g}. $$Which statement best describes the data?

Accepted Answer

The measurements are precise but not accurate.

Question 6

Which of the following is the correct equivalence statement for converting $$1 \ \mathrm{cm^3$} to$$ $$\mathrm{m^3$}$$?

Accepted Answer

$$1 \ \mathrm{cm^3$} = 1 	imes 10$$^{-6}$$ \ \mathrm{m^3$}$$

Question 7

A hospital has $$125$$ deciliters of blood plasma. What is the volume in milliliters?

Accepted Answer

$$12,500 \ \mathrm{mL}$$

Question 8

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 9

A cube of a metal has a mass of $$40.0 \ \mathrm{g}$$ and a volume of $$5.00 \ \mathrm{cm^3$}. $$What is its density?

Accepted Answer

$$8.00 \ \mathrm{g/cm^3$}$$

Question 10

Which of the following is the correct formula for converting Celsius to Kelvin?

Accepted Answer

$$K = ^\circ C + 273.15$$

Question 11

A student needs $$5.25 \ \mathrm{mL} of $$methanol for an experiment. If the density of methanol is $$0.791 \ \mathrm{g/mL}$$, how many grams should be measured out?

Accepted Answer

$$4.15 \ \mathrm{g}$$

Question 12

Which of the following is the correct scientific notation for the number $$0.000582$$?

Accepted Answer

$$5.82 	imes 10$$^{-4}$$

Question 13

A woman has a mass of $$115 \ \mathrm{lb}. $$What is her mass in kilograms? (Use $$1 \ \mathrm{kg} = 2.2 \ \mathrm{lb})$$

Accepted Answer

$$52.3 \ \mathrm{kg}$$

Question 14

Which of the following is NOT a base SI unit?

Accepted Answer

Gram (g)

Question 15

If a measurement is recorded as $$0.00450 \ \mathrm{g}$$, how many significant figures does it have?

Accepted Answer

3

Question 16

A graduated cylinder is used to measure volume. Which statement is TRUE about its accuracy compared to a volumetric flask?

Accepted Answer

A graduated cylinder is less accurate than a volumetric flask.

Question 17

Which of the following is the correct result (with proper significant figures) for $$106.7 + 0.25 + 0.015$$?

Accepted Answer

$$107.1$$

Question 18

A cube of gold has a length of $$2.00 \ \mathrm{cm}. If $$the density of gold is $$19.32 \ \mathrm{g/cm^3$}$$, what is the mass of the cube?

Accepted Answer

$$154.6 \ \mathrm{g}$$

Question 19

Which of the following is the correct equivalence for $$1 \ \mathrm{mL}$$?

Accepted Answer

$$1 \ \mathrm{mL} = 1 \ \mathrm{cm^3$}$$

Chapter 1: Introduction to Matter, Energy, and Measurement

Guida di studio - Domande di pratica

Study guide - Flashcard