Chemical Reactions - General Organic and Biochemistry | Biology+

Course

Biochemistry

Study Pack

Set 1: Matter, Energy, and Measurement

Set 3: Chemical Bonds

Set 4: Chemical Reactions

Set 5: Gases, Liquids, and Solids

Set 6: Solutions and Colloids

Set 7: Reaction Rates and Chemical Equilibrium

Set 8: Acids and Bases

Set 9: Nuclear Chemistry

Set 10: Organic Chemistry

Set 11: Alkanes

Set 12: Alkenes, Alkynes, and Aromatic Compounds

Set 13: Alcohols, Ethers, and Thiols

Set 14: Chirality: the Handedness of Molecules

Set 16: Aldehydes and Ketones

Set 17: Carboxylic Acids

Set 18: Carboxylic Anhydrides, Esters, and Amides

Set 19: Carbohydrates

Set 21: Proteins

Set 22: Enzymes

Set 23: Chemical Communications: Neurotransmitters and Hormones

Set 24: Nucleotides, Nucleic Acids, and Heredity

Set 25: Gene Expression and Protein Synthesis

Set 26: Bioenergetics: How the Body Converts Food to Energy

Set 27: Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Set 28: Biosynthetic Pathways

Set 29: Nutrition

Set 30: Immunochemistry

Set 31: Body Fluids

Set 4 Chemical Reactions

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Set 4 Chemical Reactions

(Multiple Choice)

Free

What is the formula weight of aluminum sulfate, Al₂(SO₄)₃?

A) 75.1 amu
B) 150.2 amu
C) 342.2 amu
D) 369.7 amu

Answer

(Multiple Choice)

Free

The mass of an atom of ¹²C is exactly 12 atomic mass units. Which of the following describes a mole of ¹²C atoms?

A) a sample that weighs exactly 12 atomic mass units
B) a sample that contains 6.02 × 10²³ atoms of ¹²C
C) a sample that weighs exactly 12 atomic mass units and a sample that contains 6.02 x 10²³atoms of ¹²C
D) neither a sample that weighs exactly 12 atomic mass units or a sample that contains 6.02 x 10²³ atoms of ¹²C

Answer

(Multiple Choice)

Free

How many moles of marble, CaCO₃, are there in a 275-g piece of marble?

A) 4.57 × 10^-22
B) 0.364
C) 2.75
D) 275

Answer