# Calculate the energy required to heat 0.40kg of water from 44.4°C to 62.6°C .Assume the specific heat capacity of water under these conditions is. 4.18J·g−1K−1. Be sure your answer has the correct number of significant digits.

Question

Calculate the energy required to heat 0.40kg of water from 44.4°C to 62.6°C .Assume the specific heat capacity of water under these conditions is. 4.18J·g−1K−1. Be sure your answer has the correct number of significant digits.

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Step 1

Absorbed heat energy is given as, help_outlineImage TranscriptioncloseQ SxmxAT Where Q Absorbed heat energy S Specific heat capacity mMass AT Temperature change fullscreen
Step 2

The give values are substituted in above equation to get required energy... help_outlineImage TranscriptioncloseQSxmxAT -4.18 J/gKx0.40k gx(62.6°C44.4°C) = 4.18 J/gKx400 gx(335.6K-317.4K) =4.18J/gKx400 gx 18.2K 30430.4 J =30.43kJ fullscreen

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### Chemical Thermodynamics 