Answer:
Explanation:
this is one of the PV=nrt formula questions
are you familiar with that formula from the gas law??
where P = pressure,
V = volume
n = the number of moles
r = is some constant, look that one up
t is the temperature, often a Standard temp is used of 20 C
so you'll have to figure out the molar amount of 1.23 g of chlorine. for n
put that amount of moles of the gas.
V is the volume, 0.95 L
P is the 15.6 psi
then equate the equations
(15.6*.95 ) / [moles of chorine gas in 1.23 g * r * 20 (b/c of STP)] =(P*.95) / [n molar amount of 1.89 g of chlorine gas * r * 20 ( STP, again)]
r is that constant like 8.84x10-9 or something, look it up
Now you only have "P" left on the right hand side of the equation
I'll algebra the equation down for you some.
14.82 / [n(1.23) *r*20] = P * (.95/[n(1.89)*r*20]
you'll be able to solve this pretty easily once you plug in the molar values, and the constant value for "r" :)
got it?