What is the density of air at 75 f and latm pressure? express in lbm/ft3 and kg/m3

Answer : The density of air in and is, and respectively.

Explanation :

where,

P = pressure of air = 1 atm

V = volume of air

T = temperature of air = 297 K

The conversion used for the temperature from Fahrenheit to degree Celsius is:

The conversion used for the temperature from degree Celsius to Kelvin is:

n = number of moles

m = mass of air

M = average molar mass of air = 28.97 g/mole

= density of air = ?

R = gas constant = 0.0821 L.atm/mol.K

Now put all the given values in the above formula, we get:

Now we have to calculate density in .

Conversion used :

So,

The density of air in is,

Now we have to calculate density in .

Conversion used :

So,

The density of air in is,

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates