chem!
posted by Joan .
i cant figure this one out! :(
a balloonist is preparing a trip in a helium balloon. the trip begins in early morning at a temp of 15 degrees Celcius. By mid afternoon, the temp has increased to 30 degrees C. assuming the pressure remains constant at 1.00 atm, for each mole of helium, calculate:
1. the initial and final volume
2. the change in internal energy
3. the work done by helium
4. change in enthalpy
Respond to this Question
Similar Questions

physics
What would be the final temp when 100 kg of 0 degrees Celcius cold water is mixed with 60 kg of 35 degrees warm water? 
CHEM
How many grams of helium must be added to a balloon containing 8.00 g of helium gas to double its volume. Assume no temp or pressure change. 
11th grade chemistry
a vessel contains 12 gm of methane gas at t degree celcius temp. and 1 atm. pressure. when the temp. is increased by 10 degree celcius at the same volume, the pressure increases by 10%. calculate the volume and initial temp. 
Chem
If it takes 600 calories of heat to raise 75ml of water to a final temp of 96 degrees C. What is the initial temp. How do I set this problem up if I don't know my change in temp? 
chemistry
a balloonist is preparing a trip in a helium balloon. the trip begins in early morning at a temp of 15 degrees Celcius. By mid afternoon, the temp has increased to 30 degrees C. assuming the pressure remains constant at 1.00 atm, for … 
Chem
A balloonist is preparing to make a trip in a heliumfilled balloon. The trip begins in early morning at a temperature of 15 degrees C. By midafternoon, the temperature has increased to 30. degrees C. Assuming the pressure remains … 
math
One day at 3:00 am the temp was 13 degrees f in Kodiak Alaska. At 10:00 am the temp was 22 degrees f. What was the average change in temp per hour? 
math
the high temp today was 62 degrees. when nighttime comes, the temp will drop 40 degrees. by 4 am the temp will drop an additional 40 degrees. what is the temp at 4 am? 
Algebra
Tire pressure is directly proportional to temp on a temp scale where zero degrees is absolute zero. given that temp in degrees celcius and degrees Fahrenheit are related by the formula F=9/5C +32 and absolute zero is 273.15C, by what … 
Math
On Monday the temp was 50 degrees. On Tuesday the temp increased by 22% what was the temp on Tuesday?