How to Calculate the Mass of Glycerin with Given Energy and Temperature Change?

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SUMMARY

The mass of glycerin can be accurately calculated using the formula Q = C*M*(T2-T1), where Q represents the energy input, C is the specific heat capacity, and T2-T1 is the temperature change. In this discussion, the specific heat capacity of glycerin is confirmed to be 2400 J/kg·K. Using this value, the calculated mass of glycerin is approximately 0.545 kg when 5.50 x 103 J of energy causes a 4.20°C temperature rise. The discrepancy in results arises from the incorrect use of units for specific heat capacity.

PREREQUISITES
  • Understanding of thermodynamic principles, specifically heat transfer.
  • Familiarity with the formula Q = C*M*(T2-T1).
  • Knowledge of specific heat capacity and its units (J/kg·K).
  • Basic algebra skills for manipulating equations.
NEXT STEPS
  • Research the specific heat capacities of various substances for comparative analysis.
  • Learn about the implications of temperature changes in phase transitions.
  • Explore the concept of energy conservation in thermodynamic processes.
  • Investigate the application of calorimetry in practical scenarios.
USEFUL FOR

This discussion is beneficial for students studying thermodynamics, chemistry enthusiasts, and anyone involved in practical applications of heat transfer calculations, particularly in the context of glycerin and similar substances.

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Homework Statement



Glycerin, a major component of soap, is heated before being poured into moulds. Calculate the mass of glycerin if 5.50 x 10^3 J of energy causes a 4.20°C temperature rise.


Homework Equations


Q = C*M*(T2-T1)

I need to look up C which is specific heat for glycerin. I think its 2400 Jkg-1K-1. Or 2.4. I'm not sure

Q = 5.5x10^3 J
T2-T1 = 4.2
C=?



The Attempt at a Solution



I got m= 545.634921 g when I plugged in 2.4 as c.
and m= 0.545634921 g when I plugged in 2400 as c.
 
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Thanks for the help
 

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