You run a chromatogram of inks belonging to 3 crime suspects and from a ransom note. The ink resolves into the following numbers of spots: suspect A= 2, suspect B= 4, suspect C= 3, note= 2. Which suspect would you most likely bring in for questioning?

A

Explanation:

Both suspect A and the note has the same number of spots.

A.

Explanation:

Using the ideal gas equation, we can calculate the number of moles present. I.e

PV = nRT

Since all the parameters are equal for both gases, we can simply deduce that both has the same number of moles of gases.

The relationship between the mass of each sample and the number of moles can be seen in the relation below :

mass in grammes = molar mass in g/mol × number of moles.

Now , we have established that both have the same number of moles. For them to have the same mass, they must have the same molar masses which is not possible.

Hence option A is wrong