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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: luckyducky1234 on September 10, 2004, 07:53:36 PM

Title: short chem question
Post by: luckyducky1234 on September 10, 2004, 07:53:36 PM

I need help on how you do this prob. ok here it is:

If a round ballon has a radius of 10cm at 273 K. What will be the radius of 373 K?

Title: Re:short chem question
Post by: ssssss on September 11, 2004, 03:28:25 AM

Use P1V1=P2V2 formulae and you will able to do it.And everytime you post a question show us that you have atleast attempted the problem.

Title: Re:short chem question
Post by: Demotivator on September 11, 2004, 10:05:35 AM

Not quite. The pressure is constant. So Use:
V1/T1 = V2/T2
For the volumes, you have to substitute the volume expression for spheres:
(4/3)(pi)r³

Title: Re:short chem question
Post by: Donaldson Tan on September 11, 2004, 11:17:33 PM

assuming pressure is constant

Title: Re:short chem question
Post by: ssssss on September 12, 2004, 10:25:26 AM

Quote from: Demotivator on September 11, 2004, 10:05:35 AM

Not quite. The pressure is constant. So Use:
V1/T1 = V2/T2
For the volumes, you have to substitute the volume expression for spheres:
(4/3)(pi)r³

Ahhh...Right.That was a silly Mistake.