final exam review for tw
DESCRIPTION
Chemistry 11TRANSCRIPT
FINAL E
XAM
REVIEW
CL I C
K E R E
DI T
I ON
!
1. You can identify a metal by carefully determining its density. A 33.39 g sample of an unknown metal is 1.50 cm long, 2.50 cm wide, and 1.00 cm thick. What is a possible identity of the element?
A. nickel, 8.0 g/cm3
B. aluminum, 2.70 g/cm3
C. silver, 10.5 g/cm3
Question #1
1. You can identify a metal by carefully determining its density. A 33.39 g sample of an unknown metal is 1.50 cm long, 2.50 cm wide, and 1.00 cm thick. What is a possible identity of the element?
A. nickel, 8.0 g/cm3
B. aluminum, 2.70 g/cm3
C. silver, 10.5 g/cm3
Question #1
Which of the following observations is/are examples of physical change?
A. hydrogen gas is evolved when zinc reacts with hydrochloric acidB. Aluminum melts when heated above 660°C C. The density of water decreases when it solidifies.
Question #2
Which of the following observations is/are examples of physical change?
A. hydrogen gas is evolved when zinc reacts with hydrochloric acid
B. Aluminum melts when heated above 660°C
C. The density of water decreases when it solidifies.
Question #2
Ethanol boils at 351.7 K. What is this temperature in Celsius?
Question #3
Ethanol boils at 351.7 K. What is this temperature in Celsius?
Question #3
78.7 oC
Question #4
An electronic balance is used to determine that a sample has a mass of 5.8234 g. How many significant figures does this measurement have?
Question #4
An electronic balance is used to determine that a sample has a mass of 5.8234 g. How many significant figures does this measurement have?
5
Question #5
What is the correct answer to the following expression:
(86.11 – 85.49) / 28.26A. 2 × 10-2
B. 2.2 × 10-2
C. 2.19 × 10-2
D. 2.194 × 10-2
E. 2.1939 × 10-2
Question #5
What is the correct answer to the following expression:
(86.11 – 85.49) / 28.26A. 2 × 10-2
B. 2.2 × 10-2
C. 2.19 × 10-2
D. 2.194 × 10-2
E. 2.1939 × 10-2
Question #6
Question #6
Question #7
A sulfide ion has ____ electrons.
Question #7
A sulfide ion has ____ electrons.18
Question #8
What is the charge on the copper ion in Cu3N?
Question #8
What is the charge on the copper ion in Cu3N?
3
Question #9
What is the correct formula for iron(III) bromide?
A. FeBrB. FeBr3
C. Fe2Br3
D. Fe3Br2
E. Fe3Br
Question #9
What is the correct formula for iron(III) bromide?
A. FeBrB. FeBr3
C. Fe2Br3
D. Fe3Br2
E. Fe3Br
Question #10
Calculate the number of moles in 0.093 g Zn.
Question #10
Calculate the number of moles in 0.093 g Zn.
0.0014 mol
Question #11
How many hydrogen atoms are in 1.0 g of CH4?
A.6.2 × 10-2 atomsB.2.5 × 10-1 atomsC.3.8 × 1022 atomsD.1.5 × 1023 atomsE.3.9 × 1025 atoms
Question #11
How many hydrogen atoms are in 1.0 g of CH4?
A.6.2 × 10-2 atomsB.2.5 × 10-1 atomsC.3.8 × 1022 atomsD.1.5 × 1023 atomsE.3.9 × 1025 atoms
Question #12
Identify reaction type: Cu + AgNO3 Cu(NO3)2 + Ag
A. CombustionB. Single replacementC. Double replacementD. SynthesisE. Decomposition
Question #12
Identify reaction type: Cu + AgNO3 Cu(NO3)2 + Ag
A. CombustionB. Single replacementC. Double replacementD. SynthesisE. Decomposition
Question #13
Identify reaction type: 2 C8H18 + 25 O2 16 CO2 + 18 H2O
A. CombustionB. Single replacementC. Double replacementD. SynthesisE. Decomposition
Question #13
Identify reaction type: 2 C8H18 + 25 O2 16 CO2 + 18 H2O
A. CombustionB. Single replacementC. Double replacementD. SynthesisE. Decomposition
Question #14
Identify reaction type: 4Ag + O2 2Ag2O
A. CombustionB. Single replacementC. Double replacementD. SynthesisE. Decomposition
Question #14
Identify reaction type: 4Ag + O2 2Ag2O
A. CombustionB. Single replacementC. Double replacementD. SynthesisE. Decomposition
Question #15
Write a balanced equation for the double displacement reaction between aluminum nitrate and potassium phosphate.
What is the sum of the coefficients?
Question #15
Write a balanced equation for the double displacement reaction between aluminum nitrate and potassium phosphate.
What is the sum of the coefficients?6
Question #16
Aluminum reacts with oxygen to produce aluminum oxide.
4 Al(s) + 3 O2(g) 2Al2O3(s)
If 4.0 moles of Al react with excess O2, how many moles of product can be formed?
Question #16
Aluminum reacts with oxygen to produce aluminum oxide.
4 Al(s) + 3 O2(g) 2Al2O3(s)
If 4.0 moles of Al react with excess O2, how many moles of product can be formed? 2.0 mol
Question #17
What mass of water is produced by the complete combustion of 6.21 g of hexane, C6H14 (can assume O2 in xs)?
A.0.186 gB.1.60 gC.9.09 gD.43.5 gE.208 g
Question #17
What mass of water is produced by the complete combustion of 6.21 g of hexane, C6H14 (can assume O2 in xs)?
A.0.186 gB.1.60 gC.9.09 gD.43.5 gE.208 g
Question #18
How many moles of Cu2O can be produced from the reaction of 0.66 mol Cu with 0.40 mol O2?
Question #18
How many moles of Cu2O can be produced from the reaction of 0.66 mol Cu with 0.40 mol O2?
0.33 mol
Question #19
At constant temperature, 12.5 L of a gas at 262 mm Hg is compressed to 4.15 L. What is the final pressure of the gas?
Question #19
At constant temperature, 12.5 L of a gas at 262 mm Hg is compressed to 4.15 L. What is the final pressure of the gas?
789 mm Hg
Question #20
A 48.0 L gas cylinder contains 498 g H2 at 25°C. What is the pressure (in atm) inside the cylinder?
(R = 0.0821 L*atm/mol*K)
Question #20
A 48.0 L gas cylinder contains 498 g H2 at 25°C. What is the pressure (in atm) inside the cylinder?
(R = 0.0821 L*atm/mol*K)
125 atm
Question #21
The correct name for LiCl isA. lithium monochlorideB. lithium(I) chlorideC. monolithium chlorideD. lithium chlorideE. monolithium monochloride
Question #21
The correct name for LiCl isA. lithium monochlorideB. lithium(I) chlorideC. monolithium chlorideD. lithium chlorideE. monolithium monochloride
Question #22
The correct name for FeO isA. iron oxideB. iron(II) oxideC. iron(III) oxideD. iron monoxideE. iron(I) oxide
Question #22
The correct name for FeO isA. iron oxideB. iron(II) oxideC. iron(III) oxideD. iron monoxideE. iron(I) oxide
Question #23
What is the subscript of barium in the formula barium sulfate?
Question #23
What is the subscript of barium in the formula barium sulfate?
1
Question #24
What is the molar mass of cryolite (Na3AlF6)?A. 209.9 g/molB. 185.3 g/molC. 210.0 g/molD. 104.2 g/molE. 68.97 g/mol
Question #24
What is the molar mass of cryolite (Na3AlF6)?A. 209.9 g/molB. 185.3 g/molC. 210.0 g/molD. 104.2 g/molE. 68.97 g/mol
Question #25
Which of the following would represent the greatest pressure?A. 0.713 atmB. 345 mm HgC. 12.0 psiD. 58486 Pa
Question #25
Which of the following would represent the greatest pressure?A. 0.713 atmB. 345 mm HgC. 12.0 psiD. 58486 Pa