1.00 g Cao (molar mass = 56.077 g/mol) is dropped into a Styrofoam coffee cup containing 185 g H20 (molar mass = 18.015 g/mol) at 19.5 °c. Following the thermochemical reaction below, calculate the final temperature of the water assuming that the heat absorbed/released by the cup is negligible. [specific heat capacity of water = 4.18 J/g.°C] Ca0(s) + H20(1) → Ca(OH)2(s) AH°rxn = -64.8 kJ/mol Soloot ono:

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Chapter9: Energy And Chemistry
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1.00 g Cao (molar mass = 56.077 g/mol) is dropped into a Styrofoam coffee cup containing 185 g H20 (molar mass = 18.015 g/mol) at 19.5 °C.
Following the thermochemical reaction below, calculate the final temperature of the water assuming that the heat absorbed/released by the cup is
negligible. [specific heat capacity of water = 4.18 J/g•°C]
Cao(s) + H20(1)→ Ca(OH)2(s) AH®rxn = -64.8 kJ/mol
Select one:
31.1 °C
Ob.
18.0 °C
Oc.
42.2 °C
O d. 21.0 °C
Transcribed Image Text:1.00 g Cao (molar mass = 56.077 g/mol) is dropped into a Styrofoam coffee cup containing 185 g H20 (molar mass = 18.015 g/mol) at 19.5 °C. Following the thermochemical reaction below, calculate the final temperature of the water assuming that the heat absorbed/released by the cup is negligible. [specific heat capacity of water = 4.18 J/g•°C] Cao(s) + H20(1)→ Ca(OH)2(s) AH®rxn = -64.8 kJ/mol Select one: 31.1 °C Ob. 18.0 °C Oc. 42.2 °C O d. 21.0 °C
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