Bromine is a red liquid at 25$\circ$C. Its density is 3.12 g/cm3. What is the volume of 28.1 g of liquid bromine?

A) 87.7 cm3 B) 0.111 cm3 C) 9.01 cm3 D) 28.1 cm3 E) None of the above. A) 87.7 cm3 B) 0.111 cm3 C) 9.01 cm3 D) 28.1 cm3 E) None of the above.

Exam 1: Chemistry: The Study of Change

You just measured a metal cylinder and obtained the following information: mass = 3.543 g diameter = 0.53 cm height = 4.4 cm Determine the volume (V)and density of the cylinder.(V= $\pi$ r² h, where r = radius, h = height, $\pi$ = 3.14)

Free

(Essay)

4.8/5

(89)

Question 1

Correct Answer:

Verified

Volume of the cylinder = 0.97 cm³; density of the cylinder = 3.7 g/cm³.

Identify the following as a physical or chemical change: Rusting of a piece of iron.

Free

(Short Answer)

4.8/5

(77)

Question 2

Correct Answer:

Verified

Chemical

An object will float at the surface of a liquid if the mass of the object is less than the mass of the liquid that it displaces. A spherical vessel (diameter = 5.00 cm)when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene? (Given: density of water = 1.00 g/cm³; density of benzene = 0.879 g/cm³)

Free

(Multiple Choice)

4.7/5

(80)

Question 3

Correct Answer:

Verified

Classify the following as a physical or chemical change: Food spoils.

(Short Answer)

4.8/5

(76)

Question 4

The weight of a body varies according to the force of gravity exerted on the body.

(True/False)

4.8/5

(76)

Question 5

Identify the following as a physical or chemical change: Formation of snowflakes.

(Short Answer)

4.8/5

(75)

Question 6

A barrel of oil contains 42.0 gallons. How many liters is this? (1L = 1.06 qt)

(Multiple Choice)

4.8/5

(61)

Question 7

Classify the following as a mixture, a compound, or an element: Brewed coffee, ready to drink.

(Short Answer)

4.8/5

(73)

Question 8

Liquid nitrogen boils at -195.8^$\circ$C.Express the boiling point of liquid nitrogen in ^$\circ$F.

(Multiple Choice)

4.7/5

(79)

Question 9

The element gallium melts at 29.8^$\circ$C. What temperature is this in ^$\circ$F?

(Multiple Choice)

4.8/5

(82)

Question 10

Express the number 0.000053 in scientific notation.

(Multiple Choice)

4.9/5

(74)

Question 11

A unifying principle that explains a body of facts and relations is referred to as

(Multiple Choice)

4.9/5

(71)

Question 12

All of the following are properties of tin. Which one is a chemical property of tin?

(Multiple Choice)

4.8/5

(83)

Question 13

Bromine is a red liquid at 25^$\circ$C. Its density is 3.12 g/cm³. What is the volume of 28.1 g of liquid bromine?

(Multiple Choice)

4.9/5

(77)

Question 14

Dry ice (carbon dioxide)changes from a solid to a gas at -78.5^$\circ$C. What is this temperature in ^$\circ$F?

(Multiple Choice)

4.8/5

(78)

Question 15

A special flask used in the determination of densities, called a pycnometer, has a mass of 16.3179 g when empty, and it has a mass of 48.0250 g when filled with water at 20.0°C. When this same pycnometer is filled with ethyl alcohol at 20.0°C, it is found to have a mass of 41.3934 g. Find the density of ethyl alcohol at 20.0°C. (Given: at 20.0°C, the density of water is 0.9982 g/mL)

(Multiple Choice)

4.9/5

(72)

Question 16

Calculate the mass of the air contained in a room that measures 2.50 m * 5.50 m * 3.00 m (density of air = 1.29 g/dm³ at 25^$\circ$C).

(Multiple Choice)

4.8/5

(71)

Question 17

Complete the following sentence. A scientific law is

(Multiple Choice)

4.9/5

(72)

Question 18

In the process of fixing breakfast you: 1. break open the egg 2. fry it 3. cut the fried egg into pieces 4. toast a slice of bread 5. cut the toast in half Which of these are chemical processes?

(Short Answer)

4.8/5

(71)

Question 19

The mass of a body varies according to the force of gravity exerted on the body.

(True/False)

4.7/5

(80)

Question 20

Showing 1 - 20 of 153

Exam 1: Chemistry: The Study of Change

You just measured a metal cylinder and obtained the following information: mass = 3.543 g diameter = 0.53 cm height = 4.4 cm Determine the volume (V)and density of the cylinder.(V= π\piπ r2 h, where r = radius, h = height, π\piπ = 3.14)

Identify the following as a physical or chemical change: Rusting of a piece of iron.

Classify the following as a physical or chemical change: Food spoils.

The weight of a body varies according to the force of gravity exerted on the body.

Identify the following as a physical or chemical change: Formation of snowflakes.

A barrel of oil contains 42.0 gallons. How many liters is this? (1L = 1.06 qt)

Classify the following as a mixture, a compound, or an element: Brewed coffee, ready to drink.

Liquid nitrogen boils at -195.8 ∘\circ∘ C.Express the boiling point of liquid nitrogen in ∘\circ∘ F.

The element gallium melts at 29.8 ∘\circ∘ C. What temperature is this in ∘\circ∘ F?

Express the number 0.000053 in scientific notation.

A unifying principle that explains a body of facts and relations is referred to as

All of the following are properties of tin. Which one is a chemical property of tin?

Bromine is a red liquid at 25 ∘\circ∘ C. Its density is 3.12 g/cm3. What is the volume of 28.1 g of liquid bromine?

Dry ice (carbon dioxide)changes from a solid to a gas at -78.5 ∘\circ∘ C. What is this temperature in ∘\circ∘ F?

Calculate the mass of the air contained in a room that measures 2.50 m * 5.50 m * 3.00 m (density of air = 1.29 g/dm3 at 25 ∘\circ∘ C).

Complete the following sentence. A scientific law is

In the process of fixing breakfast you: 1. break open the egg 2. fry it 3. cut the fried egg into pieces 4. toast a slice of bread 5. cut the toast in half Which of these are chemical processes?

The mass of a body varies according to the force of gravity exerted on the body.

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

You just measured a metal cylinder and obtained the following information: mass = 3.543 g diameter = 0.53 cm height = 4.4 cm Determine the volume (V)and density of the cylinder.(V= $\pi$ r² h, where r = radius, h = height, $\pi$ = 3.14)

Liquid nitrogen boils at -195.8^$\circ$C.Express the boiling point of liquid nitrogen in ^$\circ$F.

The element gallium melts at 29.8^$\circ$C. What temperature is this in ^$\circ$F?

Bromine is a red liquid at 25^$\circ$C. Its density is 3.12 g/cm³. What is the volume of 28.1 g of liquid bromine?

Dry ice (carbon dioxide)changes from a solid to a gas at -78.5^$\circ$C. What is this temperature in ^$\circ$F?

Calculate the mass of the air contained in a room that measures 2.50 m * 5.50 m * 3.00 m (density of air = 1.29 g/dm³ at 25^$\circ$C).