How many sulfur atoms would be present in 41.8 moles of sulfur?

An atom is the smallest unit of ordinary matter that forms a chemical element.

There are atoms of sulphur are contained in 41.8 g of sulphur

The data is as given:-

The formula we will use is.

So, according to the formula the number of moles of sulphur =

Therefore, In 1 mole of atoms, there is  number of atoms.

So, In 1.30625 moles of Sulphur atom, number of atoms =

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7 .86×10^23 atoms of sulphur are contained in 41.8 g of sulphur

Explanation:

Molar mass of sulphur = 32 g/mol

Given mass of sulphur = 41.8g

Number of moles = Given mass / Molar Mass

So, number of moles of sulphur = 41.8/32 = 1.30625 moles

We know that,

In 1 mole of atom there are 6.022 × 10^23 number of atoms.

So, In 1.30625 moles of Sulphur arom, number of atoms = 1.30625 × 6.022 × 10^23 = 7.86×10^23 atoms

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.