Calorimetry Answers
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When 40.0 mL of 1.00 M H2SO4 is added to 80.0 mL of 1.00 M NaOH at 20.00°C in a coffee cup calorimeter, the temperature of the aqueous solution increases to 29.20°C. If the mass of the solution is 120.0 g and the specific heat of the calorimeter and solution is 4.184 J/g • °C, how much heat is given off in the reaction? (Ignore the mass of the calorimeter in the calculation.)Use .
A
4.62 kJB
10.0 kJC
14.7 kJD
38.5 kJ2
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A sample of an unknown substance has a mass of 0.465 kg. If 3,000.0 J of heat is required to heat the substance from 50.0°C to 100.0°C, what is the specific heat of the substance?Use .
A
0.00775 J/(gi°C)B
0.0600 J/(gi°C)C
0.129 J/(gi°C)D
0.155 J/(gi°C)3
Which statement defines the heat capacity of a sample?
A
the temperature of a given sampleB
the temperature that a given sample can withstandC
the quantity of heat that is required to raise the sample’s temperature by 1°C (or Kelvin)D
the quantity of heat that is required to raise 1 g of the sample by 1°C (or Kelvin) at a given pressureDid you find these answers helpful?
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