Wednesday

September 17, 2014

September 17, 2014

Posted by **Alex** on Thursday, March 8, 2012 at 6:40pm.

A. 3.23 x 103 B. 3.67 x 103 C. 4.17 x 103 D. 2.08x104 E. 2.12 x 104

- Chemistry -
**DrBob222**, Thursday, March 8, 2012 at 6:51pmIt would have helped to give the data below. Here is how you do the problem.

I assume there is a density. Use the density to calculate the mass. mass -= volume x density.

Then for heat used there are two formula to use.

Within a phase you use

mass x specific heat x (Tfinal-Tinitial)

For example, for liquid ethanol between the freezing point and boiling point you will use

mass ethanol x specific heat ethanol x (b.p. temp - freezing point temp).

Then for the change of phase use

mass ethanol x heat fusion at the melting/freezing point or

mass ethanol x heat vaporization at the boiling point.

Then add all of the heats together for the total.

Post your work if you get stuck.

**Answer this Question**

**Related Questions**

chemistry - From data below, calculate the total heat (J) needed to convert 0....

chemistry - From data below, calculate the total heat (J) needed to convert 0....

chemistry 1 - From data below, calculate the total heat (J) needed to convert 0...

chemistry - Ethanol (C2H5OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ...

Chemistry - Ethanol (C2H5OH) melts at -114 degrees Celsius. The enthalpy of ...

Chemistry - How much heat is required to convert 32.5 grams of ethanol at 28 C ...

Chemistry - A 15.0g sample of liquid ethanol, C2H5OH, absorbs 5.13x10^3 J of ...

Chemistry - From data below, calculate the total heat (in J) associated with ...

Chemistry - Ethanol, C2H5OH, is mixed with gasoline and sold as gasohol. Use the...

apchem - A 15.0g sample of liquid ethanol, C2H5OH, absorbs 5.13x10^3 J of heat ...