Q. The molecular mass of each $N_{2}$ and CO is 28. If 0.5 L of $N_{2}$ at $27℃$ and 700 mm pressure contains $n$ molecules, the number of molecules in 1.0 L of CO under identical conditions will be
A) $\frac{n}{2}$
B) $n$
C) $2n$
D) None of these
Explanation
(c)
Molecular mass of $N_{2} = 28$, CO = 28
Number of molecules of $N_{2}$
$(V = 0.5\ L,\ T = 27℃,\ p = 700\ mm) = n$
Number of molecules of $N_{2}$
$(V = 1\ L,\ T = 27℃,\ p = 700\ mm) = 2n$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.