Wednesday
October 1, 2014

Homework Help: CHEMISTRY HELP

Posted by Jen on Monday, October 17, 2011 at 7:37pm.

1) The specific heat of solid copper is 0.385 J/g(C). What thermal energy change occurs when the temperature of a 34.10 g sample of copper is cooled from 35.7 degrees Celsius to 13.9 degrees Celsius?
Answer: -286.3 J
This amount of heat is used to melt solid ice at 0.0 degrees Celsius. The molar heat of fusion of ice is 6.00 kJ/mol. How many moles of ice are melted?
Answer: ???

2) Brazilians are quite familiar with fueling their automobiles with ethanol, a fermentation product from sugarcane. Calculate the standard molar enthalpy for the complete combustion of liquid ethanol (C2H5OH) using the standard enthalpies of formation of the reactants and products.
C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O(g)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - The specific heat of solid copper is 0.385 J/g*C. What thermal ...
Chemistry - The specific heat of solid copper is 0.385 J/g*C. What thermal ...
science - 12. The specific heat of copper is 0.385 J/g C. Which equation ...
Physical Science - The specific heat of copper is 0.385 J/g.C. Which equation ...
chemistry - * A 50 gram sample of an unknown metal warms from 18 to 58 after ...
chemistry - How much heat is needed to raise the temperature of 75 grams of ...
chemistry - How much heat is needed to raise the temperature of 75 grams of ...
physics - a 32g sample of copper is at 29C If 1502j of energy are added to the ...
physical - Specific Heat. Copper has a specific heat of 0.092 cal/g/deg C. A 75 ...
chemistry - Metal Specific Heat (J/g-C) Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe...

Search
Members