Posted by Anonymous on Sunday, October 6, 2013 at 5:39pm.
When we combine the three gas laws into one expression:
V is directly proprtional to T
P is directly propetional to T > PV is directly proprtional to T
P is inversely proportional to 1/V
PV/T= constant
*******I do not understand how PV is directly proportional to T and how PV/T= constant. Is there a mathematical manipulation or something? Please explain.

CHEMISTRY  bobpursley, Sunday, October 6, 2013 at 5:56pm
PV=nRT replacing nR with c,a constant, then PV=cT
so PV is directly proportional to T
for part 1, divide
PV=cT by T
PV/T=constant
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