Chem101 Chapter 2 Homework

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Write the empirical formula corresponding to AL2BR6

AlBr lower 3

Determine the formula for aluminum oxide

Al₂O₃

Predict the chemical formula for the ionic compound formed by Ca^2+ and CIO^3-

Ca(ClO₃)₂

Which has the correct name-formula combination?

Calcium sulfite - CaSO₃

Determine the formula for cobalt (III) hydroxide?

Co(OH)₃

Which of the following represents a species with 39 protons and 36 electrons?

Y^3+

What is the correct IUPAC name for P₄S₃?

tetra phosphorus tri sulfide

How many protons and electrons are found in Sc^3+ ion?

21 protons, 18 electrons

How many protons are in an atom of Ga?

31

How many oxygen atoms are in 32 molecules of dinitrogen tetroxide, N^2o^4?

4 x 32 = 128 atoms

What is the mass number of zinc-70?

70

Write the chemical formula for iron (III) chloride hexahydrate

FeCl₃•6H₂O

Write the chemical formula for acetic acid

HC₂H₃O₂

Write the chemical formula for mercury (II) nitrate monohydrate

Hg(NO₃)₂•H₂O

Write the chemical formula for sulfuric acid

H₂SO₄

Write the chemical formula for sodium hydride

NaH

Which of the following is best classified as a covalent compound?

N₂O₅

Write the empirical formula corresponding to P₄O₁₀

P₂O₅

Write the chemical formula for tetraphosphorus hexasulfide

P₄S₆

What is the correct IUPAC name for Cr₂O₃?

chromium (III) oxide

What is the correct IUPAC name for Fe(NO₂)₂?

iron (II) nitrite

What is the correct IUPAC name for MnCl₃ · 4H₂O?

manganese (III) chloride tetra hydrate

What is the correct IUPAC name for MnF₃?

manganese (III) fluoride

What is the correct IUPAC name for KClO₃?

potassium chlorate

What is the correct IUPAC name for KF?

potassium fluoride

What is the correct IUPAC name for K₂SO₄?

potassium sulfate

What is the correct IUPAC name for Rb₃N?

rubidium nitride

Which of the following is a transitional metal?

silver

The atomic mass of germanium (Ge) on the periodic table is 72.630 amu. Which of the following best explains why the atomic mass is a fraction between 72 and 73?

the presence of different isotopes


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