Question 1

A student weighed 300.0 μg of sulfur in the lab.This is the same mass as

Accepted Answer

A)  3.000 × 10-7 g. 
B)  3.000 × 10-4 kg. 
C)  3.000 × 10-4 mg. 
D)  3.000 × 105 ng. 
A)  3.000 × 10-7 g. 
B)  3.000 × 10-4 kg. 
C)  3.000 × 10-4 mg. 
D)  3.000 × 105 ng.

Question 2

How many mL are in 5.67 L?

Accepted Answer

A)  5.67 × 10-3 mL 
B)  5.67 × 101 mL 
C)  5.67 × 103 mL 
D)  5.67 × 10-1 mL 
E)  5.67 × 102 mL 
A)  5.67 × 10-3 mL 
B)  5.67 × 101 mL 
C)  5.67 × 103 mL 
D)  5.67 × 10-1 mL 
E)  5.67 × 102 mL

Question 3

Convert 125°C into Kelvin

Accepted Answer

A)  0K 
B)  -148K 
C)  583K 
D)  249K 
E)  398K 
A)  0K 
B)  -148K 
C)  583K 
D)  249K 
E)  398K

Question 4

The correct answer (reported to the proper number of significant figures)to the following is
( 1712 - 1615)× ( 8.66 × 7.66)= ________

Accepted Answer

The answer of The correct answer (reported to the proper...

Question 5

Systematic error is defined as

Accepted Answer

A)  error that tends to be too high or too low. 
B)  error that has equal probability of being too high and too low. 
C)  error that averages out with repeated trials. 
D)  error that is random. 
A)  error that tends to be too high or too low. 
B)  error that has equal probability of being too high and too low. 
C)  error that averages out with repeated trials. 
D)  error that is random.

Question 6

The mass of a single arsenic atom is 1.244 × 10-22 g.This is the same mass as

Accepted Answer

A)  1.244 × 10-16 mg. 
B)  1.244 × 10-25 kg. 
C)  1.244 × 10-28 μg. 
D)  1.244 × 10-31 ng. 
A)  1.244 × 10-16 mg. 
B)  1.244 × 10-25 kg. 
C)  1.244 × 10-28 μg. 
D)  1.244 × 10-31 ng.

Question 7

How many mg does a 643 kg sample contain?

Accepted Answer

A)  6.43 × 10-4 mg 
B)  6.43 × 107 mg 
C)  6.43 × 10-3 mg 
D)  6.43 × 106 mg 
E)  6.43 × 108 mg 
A)  6.43 × 10-4 mg 
B)  6.43 × 107 mg 
C)  6.43 × 10-3 mg 
D)  6.43 × 106 mg 
E)  6.43 × 108 mg

Question 8

Convert 781K into Celsius

Accepted Answer

A)  672°C 
B)  273°C 
C)  1054°C 
D)  508°C 
E)  835°C 
A)  672°C 
B)  273°C 
C)  1054°C 
D)  508°C 
E)  835°C

Question 9

Which of the following are examples of intensive properties?

Accepted Answer

A)  boiling point 
B)  volume 
C)  mass 
D)  None of the above are examples of intensive properties. 
E)  All of the above are examples of intensive properties. 
A)  boiling point 
B)  volume 
C)  mass 
D)  None of the above are examples of intensive properties. 
E)  All of the above are examples of intensive properties.

Question 10

What does it mean to be an exact number?
 Give an example of an exact number.

Accepted Answer

An exact number has an infinite number o

Question 11

What wavelength of light would you report in units of nm,if the light had a wavelength of 8.80 × 10-10 m?

Accepted Answer

A)  8.80 × 10-3 nm 
B)  8.80 × 10-19 nm 
C)  8.80 nm 
D)  0.880 nm 
E)  880 nm 
A)  8.80 × 10-3 nm 
B)  8.80 × 10-19 nm 
C)  8.80 nm 
D)  0.880 nm 
E)  880 nm

Question 12

Identify the unit of measurement which is a SI base unit of measurement.

Accepted Answer

A)  second 
B)  Celsius 
C)  cup 
D)  ounce 
E)  yard 
A)  second 
B)  Celsius 
C)  cup 
D)  ounce 
E)  yard

Question 13

A mass of mercury occupies 0.750 L.What volume would an equal mass of ethanol occupy? The density of mercury is   and the density of ethanol is 0.789 g/mL.

Accepted Answer

A)  0.0 437 L 
B)  0. 0777 L 
C)  12.9 L 
D)  22.9 L 
A)  0.0 437 L 
B)  0. 0777 L 
C)  12.9 L 
D)  22.9 L

Question 14

Without using a calculator,solve the following problem.

Accepted Answer

A)  1 × 100 
B)  1 × 107 
C)  1 × 1021 
D)  1 × 1028 
A)  1 × 100 
B)  1 × 107 
C)  1 × 1021 
D)  1 × 1028

Question 15

Determine the mass of a metal cube that has a density of 12.7 g/mL and a volume of 87.63 mL.

Accepted Answer

A)  4.83 × 103 g 
B)  1.11 × 103 g 
C)  8.32 × 10-2 g 
D)  1.45 g 10-1 g 
E)  3.90 × 102 g 
A)  4.83 × 103 g 
B)  1.11 × 103 g 
C)  8.32 × 10-2 g 
D)  1.45 g 10-1 g 
E)  3.90 × 102 g

Question 16

How many significant figures are in the measurement,0.0023?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 17

How many µm3 are found in a shape that has a volume of 4.64 × 10-9 cm3?

Accepted Answer

A)  4.64 × 10-5 µm3 
B)  4.64 × 108 c = µm3 
C)  4.64 × 103 µm3 
D)  4.64 × 1016 µm3 
E)  4.64 × 10-2 µm3 
A)  4.64 × 10-5 µm3 
B)  4.64 × 108 c = µm3 
C)  4.64 × 103 µm3 
D)  4.64 × 1016 µm3 
E)  4.64 × 10-2 µm3

Question 18

How many liters of wine can be held in a wine barrel whose capacity is 30.0 gal? 1 gal= 4 qt = 3.7854 L.

Accepted Answer

A)  1.26 ×   
B)  0.126 
C)  114 
D)  7.93 ×   
E)  7.93 
A)  1.26 ×   
B)  0.126 
C)  114 
D)  7.93 ×   
E)  7.93

Question 19

Convert 5 μm to meters.

Accepted Answer

A)  5 × 10-9 m 
B)  5 × 10-6 m 
C)  5 × 10-3 m 
D)  5 × 106 m 
A)  5 × 10-9 m 
B)  5 × 10-6 m 
C)  5 × 10-3 m 
D)  5 × 106 m

Question 20

A propane molecule contains 3 atoms of carbon.The number 3 represents how many significant figures?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  infinite 
A)  one 
B)  two 
C)  three 
D)  infinite

Exam 1: Essentials: Units, Measurements, and Problem Solving

A student weighed 300.0 μg of sulfur in the lab.This is the same mass as

How many mL are in 5.67 L?

Convert 125°C into Kelvin

The correct answer (reported to the proper number of significant figures)to the following is ( 1712 - 1615)× ( 8.66 × 7.66)= ________

Systematic error is defined as

The mass of a single arsenic atom is 1.244 × 10-22 g.This is the same mass as

How many mg does a 643 kg sample contain?

Convert 781K into Celsius

Which of the following are examples of intensive properties?

What does it mean to be an exact number? Give an example of an exact number.

What wavelength of light would you report in units of nm,if the light had a wavelength of 8.80 × 10-10 m?

Identify the unit of measurement which is a SI base unit of measurement.

A mass of mercury occupies 0.750 L.What volume would an equal mass of ethanol occupy? The density of mercury is and the density of ethanol is 0.789 g/mL.

Without using a calculator,solve the following problem.

Determine the mass of a metal cube that has a density of 12.7 g/mL and a volume of 87.63 mL.

How many significant figures are in the measurement,0.0023?

How many µm3 are found in a shape that has a volume of 4.64 × 10-9 cm3?

How many liters of wine can be held in a wine barrel whose capacity is 30.0 gal? 1 gal= 4 qt = 3.7854 L.

Convert 5 μm to meters.

A propane molecule contains 3 atoms of carbon.The number 3 represents how many significant figures?

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

The mass of a single arsenic atom is 1.244 × 10^-22 g.This is the same mass as

What wavelength of light would you report in units of nm,if the light had a wavelength of 8.80 × 10^-10 m?

How many µm³ are found in a shape that has a volume of 4.64 × 10^-9 cm³?