Chemistry!!
posted by Miley .
A 100.0 g sample of ethanol at 25.0 degrees celsius is heated and boiled completely to vapor at its boiling point. How much heat does it absorb?
i did....
q=100.0 *2.44*43.5=10,614 J
q=100.0*2.44*53.5=13,054.
then i added the two q's together and i got 23,700 J. is that right??? if no can someone please tell me what to do?

You need to tell me what numbers you are using. The second q of 13054 looks ok but I used 78.4 for the boiling point and 78.425 = 53.4). Perhaps you used a different boiling point.
I found several values for heat of vaporization. You should have mass x heat vaporization, then add the two qs together. I don't know what the 43.5 is in the first q but probably that part is wrong. Perhaps I can be more helpful if you tell me what values you are using. 
43.5 i got off a phyical state changing chart...

If its 45.3 J/g*C for the heat of vaporization, then q = 100 x 45.3 = ??
However, I didn't see anything that looked like that when I looked for delta H vap.
Respond to this Question
Similar Questions

Physics
the pressure is one atmosphere and determine the heat in joules required to produce 5.03 kg of water vapor at 100.0 °C, starting with (a) 5.03 kg of water at 100.0 °C and (b) 5.03 kg of liquid water at 0.0 °C. for part (a) I used … 
chemistry
How much heat is required to vaporize 3.50L of at its normal boiling point? 
chemistry
How much heat is required to vaporize 3.50L of at its normal boiling point? 
Chemistry
In a mountainous location, the boiling point of pure water is found to be 95 degrees Celsius. How many grams of sodium chloride much be added to 1 kg of water to bring the boiling point back to 100 degrees Celsius? 
physical science
how much heat must be added to 1.0 kg of water at 100 degrees Celsius to convert it to steam at 100 degrees Celsius? 
physical science
How much heat must be added to 1.0kg of steam at 100 degrees Celsius to convert it to steam at 110 degrees Celsius? 
Chemistry
A sample of benzoic acid contaminated with NaCl and sand is to be recrystallized: Benzoid Acid: Solubility in water at 100 degrees Celsius in g/100 mL = 6.8, at 0 degrees Celsius in g/100 mL = 0.2. NaCl: Solubility in water at 100 … 
Physics 20
1. How much heat energy is required to change 500 grams of water at 100 degrees Celsius to steam at 100 degrees Celsius? 
chemistry
If 5.40 kcal of heat is added to 1.00 kg of water at 100 degrees celsius, how much steam at 100 degrees celsius is produced? 
Chemistry
How much energy in kJ is needed to heat 7.0L of water from35 degrees Fahrenheit to boiling point 100 degrees Celsius. If the density of water is 1.0g/cm^3 and the heat capacity of water is Cp= 4.184J/g degrees Celsius