Question 1

How many electrons are found around the species below?

Accepted Answer

A) -2 
B) 0 
C) 2 
D) 4 
A) -2 
B) 0 
C) 2 
D) 4

Question 2

Approximately,how many atoms of beryllium would be required to equal the mass of 10 atoms of aluminum?

Accepted Answer

A) 3 atoms of beryllium 
B) 10 atoms of beryllium 
C) 30 atoms of beryllium 
D) 4 atoms of beryllium 
A) 3 atoms of beryllium 
B) 10 atoms of beryllium 
C) 30 atoms of beryllium 
D) 4 atoms of beryllium

Question 3

One mole of O3 weighs 16 grams.

Accepted Answer

A) True 
 B)False

Question 4

One mole of an element would weigh the same as a mole of an isotope of the same element.

Accepted Answer

A) True 
 B)False

Question 5

How many moles of oxygen atoms are in one mole of CO2?

Accepted Answer

A) 1 
B) 2 
C) 6.02 * 1023 
D) 12.04 * 1023 
A) 1 
B) 2 
C) 6.02 * 1023 
D) 12.04 * 1023

Question 6

How many grams of iron (Fe)is contained in 15.8 g of Fe(OH)3?

Accepted Answer

A) 12.1 
B) 8.26 
C) 11.8 
D) 5.21 
A) 12.1 
B) 8.26 
C) 11.8 
D) 5.21

Question 7

The first letter of the symbol for each of the elements is the first letter of its English name.

Accepted Answer

A) True 
 B)False

Question 8

The number of Cr atoms in a 26.0 g sample of chromium is x.How many atoms,expressed in terms of x,would be contained in 26.98 g of aluminum (Al)?

Accepted Answer

A) x 
B) x/2 
C) 2x 
D) x+2 
A) x 
B) x/2 
C) 2x 
D) x+2

Question 9

Calculate the weight percentage of hydrogen in water.

Accepted Answer

A) 33.3 
B) 66.7 
C) 2.00 
D) 11.1 
A) 33.3 
B) 66.7 
C) 2.00 
D) 11.1

How many electrons are found around the species below?

Approximately,how many atoms of beryllium would be required to equal the mass of 10 atoms of aluminum?

One mole of O₃ weighs 16 grams.

One mole of an element would weigh the same as a mole of an isotope of the same element.

How many moles of oxygen atoms are in one mole of CO₂?

How many grams of iron (Fe)is contained in 15.8 g of Fe(OH)₃?

The first letter of the symbol for each of the elements is the first letter of its English name.

The number of Cr atoms in a 26.0 g sample of chromium is x.How many atoms,expressed in terms of x,would be contained in 26.98 g of aluminum (Al)?

Calculate the weight percentage of hydrogen in water.

Matter, measurements, and Calculations

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Exam 2: Atoms and Molecules

How many electrons are found around the species below?

Approximately,how many atoms of beryllium would be required to equal the mass of 10 atoms of aluminum?

One mole of O3 weighs 16 grams.

One mole of an element would weigh the same as a mole of an isotope of the same element.

How many moles of oxygen atoms are in one mole of CO2?

How many grams of iron (Fe)is contained in 15.8 g of Fe(OH)3?

The first letter of the symbol for each of the elements is the first letter of its English name.

The number of Cr atoms in a 26.0 g sample of chromium is x.How many atoms,expressed in terms of x,would be contained in 26.98 g of aluminum (Al)?

Calculate the weight percentage of hydrogen in water.

Matter, measurements, and Calculations

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids, bases, and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

One mole of O₃ weighs 16 grams.

How many moles of oxygen atoms are in one mole of CO₂?

How many grams of iron (Fe)is contained in 15.8 g of Fe(OH)₃?