Homework Statement
A gas obeys the equation of statez=1/(1-b(molar density))
What is the molar entropy change of expanding this gas from a volume of 1 dm3 to 2 dm3 at a temperature of 300 K, given b = 0.2 dm3? Calculate your answer to three significant figures and select one answer from the...
Homework Statement
We have
0.0008 Kmol of an ideal gas are expanded from V1 to V2 v2=3V1
process is reversible and T/V=Constant
if the work obtained by this expansion is 9.4 KJ find the initial temperature
R=8.314 KJ Kmol-1
Homework Equations
PV=nRT
possibly T/V = T/V
The Attempt at a...
I'm still hitting a brick wall with this one. as I have a equivalent; x+y=a value and X*Y=a value I cannot substitute or eliminate to isolate one of the variables.
Do I need a third variable or formula?
any help would be appreciated
Deeko
the charges must be positive because the combined charges (q1 + q2) is positive. and they are repelling which off the top of my head is a positive value and a negative suggests they are attracted (will double check).
Still struggling with this equation but I'll work through it. Its most likely...
Hi thanks for the welcome,
I have used coulomb's force to work out the value of q1 x q2 which = 7.51x10^-11
and I know the combined value of q1+q2 = 20x10^-6
I'm not sure where I would go from there as the post above says its not necessary to use all the equations. Would it be wise to...
1. two point charges q1 and q2 with a combined charge of 20 micro coulombs are placed 3m apart. If one repels the other with a force of 0.075N calculate;
the value of q1 and q22. k=8.987x10^9
F=kxq1xq2/r^2
E=kQ/r^2
E=f/q3. I've tried to work out the charge by working out the...