Question

The molecular weight of ${{O}_{2}}$ and $S{{O}_{2}}$ are 32 and 64 respectively. If one litre of ${{O}_{2}}$at 15 degree Celsius and 759mm pressure contains n molecule, the number of molecules in 2 litre of $S{{O}_{2}}$ under the same condition of temperature and pressure will be :
a.) N/2
b.) N
c.) 2N
d.) 4N

Answer 1

Hint: The molecular weight of any detail can be determined by means of finding the atomic mass of the element on the periodic table
The correct answer is C.

Complete answer:
$t={{15}^{0}}C$ $P=759mm$ $\dfrac{v_1}{n_1}=\dfrac{v_2}{n_2}$ $\dfrac{1}{N}=\dfrac{2}{n_2}$ $n_2=2N$
For example, if the atomic mass of sulphur (S) is 32.066 amu, then its molar mass is 32.066 g/mol. Although there’s no bodily manner of measuring the number of moles of a compound, we are able to relate its mass to the quantity of moles by means of the usage of the compound’s molar mass as a right away conversion component. By spotting the connection among the molar mass (g/mol), moles (mol), and particles, scientists can use dimensional analysis to convert between mass, wide variety of moles and wide variety of atoms very easily. The molar mass of a compound is equal to the sum of the atomic loads of its constituent atoms in g/mol. To convert among mass and number of moles, you can use the molar mass of the substance. Then, you can use Avogadro’s variety to convert the range of moles to a variety of atoms.
Sub-atomic weight, likewise called sub-atomic mass, mass of a particle of a substance, in light of 12 as the nuclear load of carbon-12. It is determined by and by adding the nuclear loads of the particles making up the substance's atomic equation.
The sub-atomic weight of a hydrogen particle (substance equation H) is 2 (in the wake of adjusting), for some unpredictable natural atoms (e.g., proteins, polymers) it might be in the millions.

Note: The weight of a compound is the total of all the nuclear weight of the components present in the equation of the compound. Some content additionally contributes it to mass. Nuclear weight is the normal nuclear mass of every component (in amu - nuclear mass unit). Carefully, one should utilize the term nuclear mass, yet the term nuclear weight is presently for the most part being utilized.