Question 1

Which of the following is the correct symbol and base unit for measuring mass in the metric system?

Accepted Answer

g, gram

Question 2

A laboratory sample has a mass of 250 mg. What is this mass in grams?

Accepted Answer

$$0.250 g$$

Question 3

Which metric prefix represents one billionth of a unit?

Accepted Answer

nano

Question 4

Convert $$500$$ deciliters $$(dL) to $$milliliters $$(mL).$$

Accepted Answer

$$50000$$\ mL$

Question 5

A platinum nugget has a mass of $$224.50 g $$and a volume of $$10.0 cm$^3. $$What is its density?

Accepted Answer

$$22.5$$\ $$g/cm^3$

Question 6

Which of the following objects will float in water based on their densities?

Accepted Answer

An object with density $$0.8 g/mL$$

Question 7

What is the temperature in Kelvin if the Celsius temperature is $$25.0^{\circ}C$?

Accepted Answer

$$298.15\ K$$

Question 8

How many centimeters are in $$1.00$$ meter?

Accepted Answer

$$100$$\ cm$

Question 9

A horse is measured at $$14.2$$ hands. If $$1$$ hand $$= 4$$ inches and $$1$$ inch $$= 2.54 cm$$, what is the horse's height in meters?

Accepted Answer

$$1.44$$\ m$

Question 10

Which equation correctly relates heat $$(q)$$, mass $$(m)$$, specific heat $$(c)$$, and temperature change $$(\Delta T)$$?

Accepted Answer

$$q = mc\Delta T$$

Question 11

How much heat is required to raise the temperature of $$200.0 g of $$water from $$22.5^{\circ}C$ to 77.3$$^{\circ}$$C$$? (Specific heat of water $$= 4.184 J/g$^{\circ}C)$$

Accepted Answer

$$45,700$$\ J$

Question 12

Which of the following is NOT a correct metric-English conversion?

Accepted Answer

$$1$$\ liter = 10.0\ gallons$

Question 13

If the density of ether is $$0.714 g/mL$$, what is the volume (in mL) of $$14.3 g of $$ether?

Accepted Answer

$$20.0$$\ mL$

Question 14

Which of the following statements best describes the difference between heat and temperature?

Accepted Answer

Heat depends on the amount of substance; temperature does not.

Question 15

A student needs to convert $$6250$$ feet to kilometers. (1 mile = 5280 ft, 1 mile = 1.609 km). What is the correct answer?

Accepted Answer

$$1.89$$\ km$

Question 16

Which of the following is the correct specific heat value for aluminum in J/g$$^{\circ}C$$?

Accepted Answer

$$0.900$$

Question 17

A speed of $$133 mi/hr $$needs to be converted to cm/s. (1 mi = 1.609 km, 1 km = 1000 m, 1 m = 100 cm, 1 hr = 3600 s). What is the correct value?

Accepted Answer

$$5,940$$\ cm/s$

Question 18

Calculate the specific heat (J/g$$^{\circ}C) of an $$unknown if $$1638 J $$raises the temperature of $$125 g $$from $$25.0^{\circ}C to$$ $$52.6^{\circ}C.$$

Accepted Answer

$$0.47$$

Question 19

Which of the following is the correct formula to convert Celsius to Fahrenheit?

Accepted Answer

$$^{\circ}F = 1.8$$(^{\circ}$$C) + 32$$

Question 20

Which of the following is the correct metric prefix and symbol for one thousandth?

Accepted Answer

milli, m

The Metric System and Measurement in Chemistry

Guida di studio - Domande di pratica

Study guide - Flashcard