22.4 dm^3 of each gas at stp has different mass but the same number of molecule. justify.
( kindly )

At STP, a given volume has the same number of moles. So, no. of moles= 22.4÷24= 0.93333mol (5 s.f.)

Number of molecules= no. of moles × 6×10^23 , which would give us the same number of molecules since the number of moles are the same.

However, mass of a gas depends on the mr of the gas.

This is because the formula for the mass of a gas is mole× mr.

Since different gases would have different mr, mass would differ.

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.

it was vincent van gogh