Two elements, Qr and Z, combine to form an ionic compound containing simple ions whose formula is Qr2Z3. Calcium also combines with element Z to form an ionic compound containing simple ions whose formula is CaZ. Qr combines with a third element, E, to form an ionic compound containing simple ions whose formula is QrE3. Based on this information, what is a reasonable formula for the compound formed when magnesium combines with element E to form a simple ionic compound? (Assume that Qr has the same charge in both compounds.)Hint: Consider the rules for forming ionic compounds to figure out what the possible charge is. Remember ionic compounds are neutral.

A) MgE B) Mg2E C) MgE2 D) Mg2E3 E) Mg3E2 A) MgE B) Mg2E C) MgE2 D) Mg2E3 E) Mg3E2

How many hydrogen atoms are in one molecule of HC2H3O2?

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

What is the name for CuC2H3O2?

A) copper(I)acetate B) carbon hydrocarbonate C) copper monocarbonate D) copper(I)oxalate E) dicarbon acetate A) copper(I)acetate B) carbon hydrocarbonate C) copper monocarbonate D) copper(I)oxalate E) dicarbon acetate

Exam 3: Elements, Compounds, and the Periodic Table

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Two elements, Qr and Z, combine to form an ionic compound containing simple ions whose formula is Qr₂Z₃. Calcium also combines with element Z to form an ionic compound containing simple ions whose formula is CaZ. Qr combines with a third element, E, to form an ionic compound containing simple ions whose formula is QrE₃. Based on this information, what is a reasonable formula for the compound formed when magnesium combines with element E to form a simple ionic compound? (Assume that Qr has the same charge in both compounds.)Hint: Consider the rules for forming ionic compounds to figure out what the possible charge is. Remember ionic compounds are neutral.

(Multiple Choice)

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Question 221

Predict the formula of the compound formed between sulfur and hydrogen.

(Short Answer)

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Question 222

What is the name of the compound, HI(g)?

(Multiple Choice)

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Question 223

Which compound below has its formula written incorrectly?

(Multiple Choice)

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Question 224

How many hydrogen atoms are in one molecule of HC₂H₃O₂?

(Multiple Choice)

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Question 225

What is the name for CuC₂H₃O₂?

(Multiple Choice)

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Question 226

What is the correct formula for calcium phosphate?

(Short Answer)

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Question 227

Showing 221 - 227 of 227

Predict the formula of the compound formed between sulfur and hydrogen.

What is the name of the compound, HI(g)?

Which compound below has its formula written incorrectly?

How many hydrogen atoms are in one molecule of HC₂H₃O₂?

What is the name for CuC₂H₃O₂?

What is the correct formula for calcium phosphate?

A Very Brief History of Chemistry

Scientific Measurements

The Mole and Stoichiometry

Molecular View of Reactions in Aqueous Solutions

Oxidation-Reduction Reactions

Energy and Chemical Change

The Quantum Mechanical Atom

The Basics of Chemical Bonding

Theories of Bonding and Structure

Properties of Gases

Intermolecular Attractions and the Properties of Liquids and Solids

Mixtures at the Molecular Level: Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases, a Molecular Look

Acid-Base Equilibria in Aqueous Solutions

Solubility and Simultaneous Equilibria

Thermodynamics

Electrochemistry

Nuclear Reactions and Their Role in Chemistry

Metal Complexes

Organic Compounds, Polymers, and Biochemicals

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