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Unit5_test - Energy Changes Multiple Choice Identify the...

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Energy ChangesMultiple ChoiceIdentify the letter of the choice that best completes the statement or answers the question.1Which statements are correct for an endothermic reaction?I.the system absorbes heatII. the enthalpy change is positiveIII. the bond enthalpy for the reactants is greater then that of the productsA)I and IIC)II and IIIB)I and IIID)I, II, and III
2When solid ammonium chloride, NH4Cl, is added to water, the temperature of the solution decreases. Whichstatement best describes this observation?
3Which statement is correct for an endothermic reaction?
4Consider metals with the following heat capacities.MetalSpecific Heat Capacity/ J kg-1K-1Cu385Ag234Au130Pt134Which metal will show the largest temperature change if 50J is supplied to 0.001kg of each metal?
5A small 2.0-g candle is consumed in heating 100 g of water from 25ºC to 75ºC. If two of the same candles are usedto heat 200 g of water, the temperature of the water after heating would have changed byA)25ºCC)75ºCB)50ºCD)100ºC
6Whenxgrams of a fuel is burned in a calorimeter containingygrams of a liquid with a specific heat capacity ofzg-1K-1. The temperature rose bytoC. The amount of heat (or heat change) produced by the fuel isJ

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Term
Winter
Professor
ZETO
Tags
Math, Thermodynamics, Reaction, amina

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