Chemistry: Chapter 7

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Write the formula for ammonium carbonate.

(NH4)2CO3

what is the formula for the percent of an element in a compound?

(molar mass of element / molar mass of compound) x 100 %

`What is the oxidation number of P in PCl3?

+ 3

What is the oxidation number of Cl in ClO3 - ?

+ 5

What is the oxidation number of N in HNO3?

+ 5

What is the oxidation number of S in H2SO4?

+ 6

What is the oxidation number of U in UF6?

+ 6

What are the three requirements for ionic compounds?

1. They need to start with a metal or ammonium 2. When you're writing them out, they need to have the formula unit (simplest ratio) 3. The total positive and negative charges must be equal

What are the ten prefixes used when naming molecular compounds?

1. mono 2. di 3. tri 4. tetra 5. penta 6. hexa 7. hepta 8. octa 9. nona 10. deca

Write the formula for silver sulfate.

Ag2SO4

Write the formula for aluminum acetate.

Al(C2H3O2)3

Find the molecular formula for a substance that is 80.0% C and 20.0 % H and has a molecular formula mass of 30.

C2H6

Write the formulas for the following molecular compound: carbon tetraiodide

CI4

Write the formulas for the following molecular compound: carbon monoxide

CO

Write the formula for copper (I) thiosulfate.

Cu2S2O3

Find the percent of water in sodium carbonate decahydrate.

H2O : 62.97 %

Write the formula for mercury (I) dichromate.

Hg2Cr2O7

Find the empirical formula and the name for a substance that is 26.56 % K, 35.41 % Cr, and 38.03 % O.

K2Cr2O7 : potassium dichromate

Find the percent composition of ammonium phosphate.

N : 28.19 % H : 8.13 % P : 20.77% O : 42.92 %

Write the formulas for the following molecular compound: dinitrogen monoxide

N2O

Write the formulas for the following molecular compound: diphosphorus pentaoxide

P2O5

Find the empirical formula and the name for a substance that is 43.67 % P and 56.33 % O.

P2O5 : diphosphorus pentoxide

Find the molecular formula and the name for a substance that has an empirical formula of P2O5 and a molecular formula mass of 283.889.

P4O10 tetraphosphorus decoxide

Write the formulas for the following molecular compound: sulfur trioxide

SO3

oxidation numbers

also called oxidation states, assigned to the atoms in molecules and polyatomic ions to show the general distribution of electrons among the bonded atoms

Write the name for the following ionic compound: (NH4)2SO4

ammonium sulfate

Name this molecular compound: CO2

carbon dioxide

Name this molecular compound: CCl4

carbon tetrachloride

H2CO3

carbonic acid

empirical formula (simplest formula)

consists of the symbols for the elements and subscripts showing the smallest whole number ratio of atoms

Oxyacids

contain H, O, and a third element

Write the name for the following ionic compound: CuSO3

copper (II) sulfite

Name this molecular compound: N2O4

dinitrogen tetroxide

Name this molecular compound: N2O3

dinitrogen trioxide

HBr

hydrobromic acid

HCl

hydrochloric acid

HF

hydrofloric acid

HI

hydroiodic acid

Write the name for the following ionic compound: Fe3(PO4)2

iron (II) phosphate

HNO3

nitric acid

HNO2

nitrous acid

H3PO4

phosphoric acid

Name this molecular compound: PO4

phosphorus tetroxide

Write the name for the following ionic compound: AgNO3

silver nitrate

H2SO4

sulfuric acid

H2SO3

sulfurous acid

Write the name for the following ionic compound: Sn(CrO4)2

tin (IV) chromate


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