Question 1

Gasoline is an example of:
A)a compound
B)an element
C)a heterogeneous mixture
D)a homogeneous mixture

Accepted Answer

Gasoline is a homogeneous mixture, meaning that it is uniform throughout and contains multiple substances that are evenly distributed.

Question 2

Gold is an example of:
A)a compound
B)an element
C)a heterogeneous mixture
D)a homogeneous mixture

Accepted Answer

Gold is an element, which means it cannot be broken down into simpler substances by chemical means.

Question 3

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man? A)1.2 kg Ca B)5.7 kg Ca C)1.2 × 10² kg Ca D)5.7 × 10² kg

Accepted Answer

First, convert the man's weight from pounds to kilograms: 185 pounds * (1 kg / 2.20462 pounds) ≈ 83.9146 kg. Then, calculate the mass of calcium: 1.4% of 83.9146 kg = 0.014 * 83.9146 kg ≈ 1.2 kg.

Question 4

The density of air under ordinary conditions at 25 °C is 1.19 g L^-1.How many kilograms of air are in a room that measures And has a 8.00 ft ceiling? (exactly); ) A)2.93 B)0.121 C)3.26 × D)0.0770 E)32.6

Accepted Answer

The answer of The density of air under ordinary conditions...

Question 5

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 10² nm thick,how many square metres will the oil slick cover? A)1.9 × 10^-3 m² B)1.9 × 10⁶ m² C)1.9 × 10⁷ m² D)none of the above

Accepted Answer

The volume of the oil spill is 3.0 barrels × 42 gallons/barrel = 126 gallons.Converting to liters: 126 gallons × 3.785 liters/gallon = 477 liters.Converting to cubic meters: 477 liters × 10^-3 m³/liter = 0.477 m³.The area covered by the oil slick is:Area = Volume / ThicknessArea = 0.477 m³ / (2.5 × 10^-2 nm × 10^-9 m/nm) = 1.9 × 10⁶ m².

Question 6

Convert 35 m³ to litres. A)3.5 × 10^-2 L B)3.5 L C)3.5 × 10² L D)3.5 × 10⁴ L

Accepted Answer

1 cubic meter (m³) is equal to 1000 liters. Therefore, 35 m³ is equal to 35 × 1000 = 35,000 liters, which is 3.5 × 10⁴ L.

Question 7

Crude oil is an example of:
A)a compound
B)an element
C)a heterogeneous mixture
D)a homogeneous mixture

Accepted Answer

Crude oil is a mixture of various hydrocarbons, such as alkanes, cycloalkanes, and aromatic hydrocarbons, as well as small amounts of sulfur, nitrogen, and oxygen compounds. It is a heterogeneous mixture as its composition is not uniform and its components can be physically separated through distillation or other methods.

Question 8

The diameter of an atom is approximately 1 × 10^-10 m.What is the diameter in millimeters? A)1 × 10^-¹⁶ mm B)1 × 10^-¹³ mm C)1 × 10^-7mm D)1 × 10^-4 mm

Accepted Answer

To convert meters to millimeters, multiply by 1,000 (since 1 m = 1,000 mm). Thus, 1 × 10^-10 m is equal to 1 × 10^-10 × 1,000 mm = 1 × 10^-7 mm.

Question 9

Convert 10 cm³ to m³. A)1 × 10^-⁵ m³ B)1 × 10^-1 m³ C)1 × 10³ m³ D)1 × 10⁷ m³

Accepted Answer

1 cm³ is equal to 1 × 10^-6 m³, so 10 cm³ is 10 × 10^-6 m³ or 1 × 10^-5 m³.

Question 10

How many litres of wine can be held in a wine barrel whose capacity is 25.0 gal? 
A)1.51 ×  L
B)0.151 L
C)94.6 L
D)6.60 ×  L
E)6.60 L

Accepted Answer

1 gallon = 3.78541 liters 
So, 25 gallons = 25 x 3.78541 = 94.63525 liters

Therefore, the wine barrel can hold 94.6 L of wine (rounded to one decimal place).

Question 11

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at  $13.22 Each,two paint brushes at $9.53 Each,and $135 For a helper.The total estimated cost with the appropriate significant figures is $
A)193.72
B)1.9 × 
C)194
D)2 × 
E)193.7

Accepted Answer

The cost of three 1-gallon cans of paint is: 3 x $13.22 = $39.66
The cost of two paint brushes is: 2 x $9.53 = $19.06
Adding the cost of a helper: $135
Total estimated cost = $39.66 + $19.06 + $135 = $193.72
Rounding to the nearest whole number with the appropriate significant figures, the answer is $194 which is choice C.

Question 12

Which of the following volumes is equal to 40 mL? A)40 cm³ B)40 dm³ C)0.40 L D)0.00040 kL

Accepted Answer

1  40 mL is equal to 40 cm³ because 1 mL is equivalent to 1 cm³.

Question 13

38.325 lbs = ________ grams.(1 lb = 454 g)

Accepted Answer

The answer of 38.325 lbs = ________ grams.(1 lb =...

Question 14

Because of the high heat and low humidity in the summer in Death Valley,California,a visitor requires about one quart of water for every two miles travelled on foot.Calculate the approximate number of litres required for a person to walk 10 kilometres in Death Valley.
A)7.4 L
B)295 L
C)76 L
D)117 L

Accepted Answer

1 quart of water is needed for every 2 miles. 10 kilometers is approximately 6.21 miles. Therefore, a person would need about 3.1 quarts of water. Since 1 quart is approximately 0.946 liters, 3.1 quarts is about 2.93 liters, which rounds to approximately 3 liters, making 7.4 L the closest option.

Question 15

How many litres of air are in a room that measures And has an 8.00 ft ceiling? A)3.26 × B)121 C)35.1 D)3.51 × E)9.75 × 10⁵

Accepted Answer

The answer of How many litres of air are in...

Question 16

The recommended adult dose of Elixophyllin,a drug used to treat asthma,is 6.00 mg kg^-1 of body mass.Calculate the dose in milligrams for a 112-lb person.(1 lb = 453.59 g) A)24 mg B)1,482 mg C)1.5 mg D)305 mg E)3.0 × mg

Accepted Answer

First, we need to convert the weight of the person from pounds to kilograms:
112 lb ÷ 2.2046 lb/kg = 50.802 kg

Then, we can calculate the dose in milligrams:
6.00 mg/kg × 50.802 kg = 304.812 mg

Rounding this to the nearest milligram, we get: 
305 mg

Therefore, the correct answer is D) 305 mg.

Quiz 1: Matter: Its Properties and Measurement

Gasoline is an example of:

Gold is an example of:

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

The density of air under ordinary conditions at 25 °C is 1.19 g L^-1.How many kilograms of air are in a room that measures And has a 8.00 ft ceiling? (exactly) ; )

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 10² nm thick,how many square metres will the oil slick cover?

Convert 35 m³ to litres.

Crude oil is an example of:

The diameter of an atom is approximately 1 × 10^-10 m.What is the diameter in millimeters?

Convert 10 cm³ to m³.

How many litres of wine can be held in a wine barrel whose capacity is 25.0 gal?

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $13.22 Each,two paint brushes at $9.53 Each,and $135 For a helper.The total estimated cost with the appropriate significant figures is $

Which of the following volumes is equal to 40 mL?

38.325 lbs = ________ grams.(1 lb = 454 g)

Because of the high heat and low humidity in the summer in Death Valley,California,a visitor requires about one quart of water for every two miles travelled on foot.Calculate the approximate number of litres required for a person to walk 10 kilometres in Death Valley.

How many litres of air are in a room that measures And has an 8.00 ft ceiling?

The recommended adult dose of Elixophyllin,a drug used to treat asthma,is 6.00 mg kg^-1 of body mass.Calculate the dose in milligrams for a 112-lb person.(1 lb = 453.59 g)

Quiz 1: Matter: Its Properties and Measurement

Gasoline is an example of:

Gold is an example of:

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

The density of air under ordinary conditions at 25 °C is 1.19 g L-1.How many kilograms of air are in a room that measures And has a 8.00 ft ceiling? (exactly) ; )

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 102 nm thick,how many square metres will the oil slick cover?

Convert 35 m3 to litres.

Crude oil is an example of:

The diameter of an atom is approximately 1 × 10-10 m.What is the diameter in millimeters?

Convert 10 cm3 to m3.

How many litres of wine can be held in a wine barrel whose capacity is 25.0 gal?

The estimated costs for remodelling the interior of an apartment are three 1-gallon cans of paint at $13.22 Each,two paint brushes at $9.53 Each,and $135 For a helper.The total estimated cost with the appropriate significant figures is $

Which of the following volumes is equal to 40 mL?

38.325 lbs = ________ grams.(1 lb = 454 g)

Because of the high heat and low humidity in the summer in Death Valley,California,a visitor requires about one quart of water for every two miles travelled on foot.Calculate the approximate number of litres required for a person to walk 10 kilometres in Death Valley.

How many litres of air are in a room that measures And has an 8.00 ft ceiling?

The recommended adult dose of Elixophyllin,a drug used to treat asthma,is 6.00 mg kg-1 of body mass.Calculate the dose in milligrams for a 112-lb person.(1 lb = 453.59 g)

The density of air under ordinary conditions at 25 °C is 1.19 g L^-1.How many kilograms of air are in a room that measures And has a 8.00 ft ceiling? (exactly) ; )

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 10² nm thick,how many square metres will the oil slick cover?

Convert 35 m³ to litres.

The diameter of an atom is approximately 1 × 10^-10 m.What is the diameter in millimeters?

Convert 10 cm³ to m³.

The recommended adult dose of Elixophyllin,a drug used to treat asthma,is 6.00 mg kg^-1 of body mass.Calculate the dose in milligrams for a 112-lb person.(1 lb = 453.59 g)