A gaseous mixture contains and in a ratio by mass. The ratio of the number of molecules of and is:

Question

A gaseous mixture contains  and  in a  ratio by mass. The ratio of the number of molecules of  and  is:

Canvas Classes · Accepted Answer

Strategy:
 For any gaseous mixture, the ratio of the number of molecules is identical to the ratio of the number of moles (Avogadro's hypothesis). We convert the given mass ratio into a mole ratio using the molar masses of the gases.

Step 1: Identify molar masses
- Molar mass of 
- Molar mass of

Step 2: Calculate the mole ratio
Since both gases have the same molar mass (), for any given masses  and :

Given mass ratio is , so the mole ratio is also .

Step 3: Conclude molecular ratio
Since th

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