Chemistry - Test 3 Review

Balance the Chemical Equation: __ZnCl2 + __AgNO3 --> __Zn(NO3)2 + __AgCl

1,2,1,2

How any moles are in 10 grams of calcium hydroxide?

1.4 x 10^-1 moles

How many grams are in 1.5 moles of magnesium chloride?

1.4 x 10^2 g

How many moles of magnesium is 3.01 x 10^22 atoms of magnesium (hint: Avacados number = 6.02 x 10^23)

0.0500 mol magnesium

Determine the volume in liters occupied by 14 g of nitrogen gas (N2) at STP (Hint: 1 mol = 22.4 L for a gas at STP)

11 L N2

Determine the formula mass of the substance below: CaCl2

111.1 amu

Find the mass in grams of 2.00 x 10^23 molecules of F2 (hint: Avacados number = 6.02 x 10^23)

12.6 g F2

How many moles in 28 grams of CO2?

0.50 mol

Determine the volume, in liters, occupied by 0.030 moles of a gas at STP. (Hint: 1 mol = 22.4 L for a gas at STP)

0.67 L

Balance the Chemical Equation: __S + __O2 --> __SO3

2,3,2

Balance the Chemical Equation: __Al + __HCl --> __AlCl3 + __H2

2,6,2,3

What is the yield of uranium from 2.50 kg of U3O8?

2.12 kg uranium

What volume will 9.35 moles of CO2 gas occupy at STP? (Hint: 1 mol = 22.4 L for a gas at STP)

209 L CO2

Determine the formula mass of the substance below: Al2(CO3)3

234.0 amu

What is the mass of 3 moles of potassium nitrate? (KNO3)

3 x 10^2 g

Balance the Chemical Equation: __Ba(NO3)2 + __Fe2(SO4)3 --> __BaSO4 + __Fe(NO3)3

3,1,3,2

Balance the Chemical Equation: __NiCO3 + __Al(OH)3 --> __Ni(OH)2 + __Al2(CO3)3

3,2,3,1

How many moles are is 484.25 g of ammonium phosphate? ((NH4)3PO4)

3.2500 moles

What is the mass of 0.25 moles of calcium sulfate? (CaSO4)

34 g

How many molecules are in a 1.44 gram sample of H2O? (hint: Avacados number = 6.02 x 10^23)

4.82 x 10^22 molecules

Calculate the percentage of water in the compound CaSO4*6H2O

44% H2O

What volume will 1.21 x 10^24 molecules of CH4 occupy at STP? (hint: Avacados number = 6.02 x 10^23 and 1 mol = 22.4 L for a gas at STP)

45.0 L CH4

Find the limiting reagent in the following chemical reaction: 2Al + 3Cl2 --> 2AlCl3

Chlorine

Identify the Reaction Type: CH4 + 2O2 --> CO2 + 2H2O

Combustion

Identify the Reaction Type: H2CO3(aq) --> H2O(l) + CO2(aq)

Decomposition

Identify the Reaction Type: FeCl3(aq) + 3NaOH(aq) --> Fe(OH)3(s) + 3NaCl(aq)

Double Replacement

What is the molar mass of sodium chloride?

58.5 g/mol

What is the percentage composition of C, H, O, and Na in C17H35COONa?

C = 70.6%, H = 11.4%, O = 10.5%, Na = 7.5%

Determine the empirical formula of the following substance: C8H18

C4H9

Find the molecular formula for a compound with a mass of 82 amu and the empirical formula C3H5

C6H10

Find the molecular formula for a compound with a mass of 112 amu and the empirical formula CH2

C8H16

Determine the empirical formula of the following substance: C3H6O3

CH2O

Determine the empirical formula of the following substance: CH3COOH

CH3COOH

What is the chemical formula for calcium hydroxide?

Ca(OH)2

Find the limiting reagent in the following chemical reaction: 4NH3 + 5O2 --> 4NO + 6H2O

Oxygen

Write the chemical formula for the following compound: phosphorous pentachloride

PCl5

Name the following compound: KNO3

potassium nitrate

Name the following compound: Ni(C2H3O2)2

Nickel (II) acetate

Write the chemical formula for the following compound: ammonium phosphate

(NH4)3PO4

What is the formula for the following salt? aluminum chloride

AlCl3

Write the chemical formula for the following compound: chromium (III) bromide

CrBr3

What is the percentage composition of Na, O, and H in NaOH?

Na = 57.5%, O = 40.0%, H = 2.50%

Identify the Reaction Type: Zn(s) + CuSO4(aq) --> ZnSO4(aq) + Cu(s)

Single Replacement

H2O(l) + N2O5(g) --> 2HNO3(aq)

Synthesis

Name the following compound: Cs2S

cesium sulfide