What will be the standard molar volume of $$He,$$ if its density is $$0.1784\,g/L$$ at $$STP?$$
A.
11.2$$\,L$$
B.
22.4$$\,L$$
C.
5.6$$\,L$$
D.
2.8$$\,L$$
Answer :
22.4$$\,L$$
Solution :
Standard molar volume is the volume occupied by $$1\,mole$$ of a gas at $$STP.$$
$$0.1784\,g$$ of $$He$$ occupies volume $$ = 1\,L$$
$$4\,g\left( {1\,mole} \right)$$ of $$He$$ occupies $$\frac{4}{{0.1784}} = 22.4\,L$$
Releted MCQ Question on Physical Chemistry >> Some Basic Concepts in Chemistry
Releted Question 1
$$27 g$$ of $$Al$$ will react completely with how many grams of oxygen?