Question

a gas occupies 1000cm3 under 760mm of Hg pressure . find under what pressure the gas will occupy 600 cm3 keeping temperature constant

Answer 1

we know that for an ideal gas

pv=nrt

and hence 

v=nrt/p

in the question it is given that the same gas is kept afterwards at a lower pressure and hence the no. of moles is same 

so we know that the value of n,r,t are same (r is gas constant)

so 

v  1/p

we also knoe that the final volume of gas is 75% of initial volume

=850*75/100 ml

so 

volume initially(L)/volume final(L) =pressure final(atm) /pressure innitially(atm)

so

(850/1000) / (850*75/(100*1000))= (760/760) /

so 

 =0.75 atm

which equals 570mm of hg

i hope this helps if so plz approve this ans

Answer 2

Bonjour!!!!
Here's the answer....
Mark brainliest if it helps....