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13 Cards in this Set
- Front
- Back
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Given the equation below, what is ΔH for burning 14.0 g of CO(g) in excessoxygen?
2CO(g) + O2(g) → 2CO2(g) ΔH = -566 kJ |
-142 kJ
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How many joules of heat are necessary to raise the temperature of a 1.42 gblock of copper from 25.0 oC to 88.5 oC? (Specific heat of copper =0.385 J/g oC)
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34.7 J
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Given the thermochemical equations and their corresponding enthalpies:
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) ΔH = -890 kJC2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(l) ΔH = -1410 kJ What is the ΔH for the following reaction?2CH4(g) + O2(g) → C2H4(g) + 2H2O(l) |
-370 kJ
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What mass of ethane gas (C2H6) must burn in excess oxygen to produce2.00 x 103 kJ of heat, given the thermochemical equation:
2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) ΔH = -3.12 x 103 kJ |
38.5 g
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Given the data below, what is ΔH° for the following reaction?
CH4(g) + 3Cl2(g) → CHCl3(g) + 3HCl(g) ΔHfo[CH4(g)] = -75 kJ/mol ΔHfo[CHCl3(g)] = -103 kJ/mol ΔHfo[HCl(g)] = -92 kJ/mol |
-304 kJ
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A gas is initially contained in a moveable cylinder that occupies a volume of900. mL under a pressure of 3.00 atm. What would be the volume of thissame gas if the pressure is reduced to 0.500 atm at constanttemperature?
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5.40 x 103 mL
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Lithium metal reacts with water to produce LiOH and H2 gas. What volume ofgas at 27°C and 1.02 atm of pressure is formed from the reaction of 1.11 gof lithium with excess water?
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1.93 L
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What is the partial pressure of helium gas in a mixture of gases that contains0.50 moles of helium, 1.5 moles of argon, and 2.5 moles of neon? Thetotal pressure of the mixture is 1.6 atm.
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0.18 atm
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At which set of conditions listed below will the molecules be moving fastest?A Ar at 100°C
B Ne at 100°C C Ne at 50°C D Ar at 50°C E They move at the same fastest speed in choices A andB |
B Ne at 100°C
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How many valence electrons does selenium (Se, atomic number 34) atompossess?
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6
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Only one set of quantum numbers listed below is a correct set. Which one?(n, ℓ, mℓ, ms)
A 3, 2, 0, 1/2 B 2, 2, -2, 1/2 C 3, 3, -3, 1/2D 4, 4, -3, 1/2 E none of these |
A 3, 2, 0, 1/2
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The ground state electron configuration 1s22s22p63s23p2 would be correctfor:
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Si
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The ground state electron configuration of Co3+ is:
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1s22s22p63s23p63d6
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