Quiz #3-3 PRACTICE: Themochemistry
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What does the symbol "ΔH" stand for?
the heat of reaction for a chemical reaction
the specific heat of a substance
one Calorie given off by a reaction
the heat capacity of a substance
When 10 g of diethyl ether is converted to vapor at its boiling point, about how much heat is absorbed? (C4H10O, ΔHvap = 15.7 kJ/mol, boiling point: 34.6°C)
How much heat is released when an acetylene (C2H2) torch burns 250 grams of fuel? (ΔHcomb = -1300 kJ/mol)
The following equation shows the reaction that occurs when nitroglycerine explodes: 4 C3H5O9N3 → 12 CO2 + 6 N2 + O2 + 10 H2O + 1725 kcal This reaction is:
a combustion reaction
a combination reaction
Given the reaction: 2 Ba(s) + O2 (g) → 2 BaO (s) + 1107 kJ How much heat is released when 5.75 g of BaO is produced?
The energy involved in dissolving a solid is known as:
heat of reaction
heat of solution
heat of fusion
heat of formation
The value of ΔH° for the reaction below is -128.1 kJ/mol:
CH3OH (l) → CO (g) + 2 H2 (g)How much heat is released when 15.5 g of CH3OH decomposes as shown in the equation?
The average fuel value of sugars is 17 kJ/g. Assuming that the sugar is the only fuel source, what is the fuel value of a 500. mL serving of Kool-Aid containing 100. g of sugar?
4.2 x 104 kJ
5.0 x 102 kJ
2.1 x 105 kJ
1.7 x 103 kJ
When 1.0 g of solid NaOH (ΔHsoln = -44.51 kJ/mol) dissolves in 10 L of water, how much heat is released?
4 Al (s) + 3 O2 (g) → 2 Al2O3 (s) ; ΔH° = -3351 kJis __________, and therefore heat is __________ by the reaction.
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