FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 2: Chemistry and Measurements

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 21

Multiple Choice

Review LaterAdd Note

Review Later

Which one of the following substances will float in gasoline, which has a density of 0.66 g/mL?

A) table salt (density = 2.16 g/mL)
B) balsa wood (density = 0.16 g/mL)
C) sugar (density = 1.59 g/mL)
D) aluminum (density = 2.70 g/mL)
E) mercury (density = 13.6 g/mL)

Correct Answer

verified

Show Answer

Question 22

Multiple Choice

Review LaterAdd Note

Review Later

According to the United States Food and Drug Administration, the recommended daily requirement of protein is 44 g. This is ________ oz of protein.

A) 1248.5
B) 320 000
C) 1.6
D) 0.0605
E) 150 000

Correct Answer

verified

Show Answer

Question 23

Multiple Choice

Review LaterAdd Note

A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold?

State the number of significant figures in each of the following measurements. -0.008 090 cm

The density of water is 1 kg/mL.

Round off each of the following to three significant figures. -25 225

There are 1000 μg in a mg.

What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL?

What is the answer, with the correct number of decimal places, for this problem? 4.392 g + 102.40 g + 2.51 g =

The ratio of the mass of a substance to its volume is its

The number 650 000 has two significant figures.

A researcher added three samples of sodium chloride solution; the volumes were: 0.351 mL, 0.350 mL and 0.349 mL. The total volume should be reported as

A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is

State the number of significant figures in each of the following measurements. -0.0005 L

Which of the following is a measurement of temperature in the metric system?

How many kilograms are in 30.4 lb?

What is 6.5 m converted to inches?

How many liters of soft drink are there in 5.25 qt?

State the number of significant figures in each of the following measurements. -9.00 × 10⁶ g

When the measured number 675 is added to the measured number 87.10, the answer should be rounded to the ones place.