The above shows a gas system which has a volume of 250 mL
at 280K. If the pressure keep constant,
what is the volume of the gas system at 250 K?

A gas system which has a volume of 250 ml at 280K. If the pressure keep constant, 223.15 ml is the volume of the gas system at 250 K.

Explanation:

Data given:

A gas system given with conditions as:

initial volume of gas, V1= 250 ml

initial temperature of the gas, T1= 280 K

Pressure = constant

Final volume of the gas V2= ?

Final temperature of the gas, T2 = 250 K

From the Charles' Law

=

rearranging the equation, we get

V2 =

Putting the values in the equation, we get

V2 =

V2 = 223.21 ml

When the gas system has its temperature reduced to 250 K the volume is reduced to 223.21 ml.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o