A vessel contains a mixtrue consisting of `m_(1) = 7g` of nitrogen `M_(1) = 28 and m_(2) = 11 g` of carbon dioxide `(M_(2) 44)` at temperature` T = 300 K` and pressure `p_(0) = 1` atm. Find the density of the mixture.
A. 1.446 g per litre
B. 2.567 g per litre
C. 3.752 g per litre
D. 4.572 g per litre