Chemistry, asked by TheLifeRacer, 1 year ago

Number of molecules in 100 ml of each of O2 , NH3 and CO2 at STP are

options

(a) in the order CO2 < O2<NH3
(b) In order NH3 <O2<CO2
(c) The same
(d NH3 = CO2 <O2

sarthakbanerjeee: from which book did you get these questions

Answers

Answered by Anonymous

Hey Folk,

answer is option ( C )

Because , equal number of volume contains equal number of moles / molecules

______________________________

Anonymous: Hydrogen atom or hydrogen molecule?

Anonymous: its a law

Anonymous: in mole.concept

Anonymous: wait, I.will say the name of that law

Anonymous: according to avogadro's law, equal no.of all gases under same condition of temp and pressure contain equal no of moles/molecules

Anonymous: so, if in questions, when volume is same for all molecules, their no.of molecules

Anonymous: are same

Answered by BarrettArcher

Answer : The correct option is C.

Explanation :

According to Avogadro's law, at same temperature and pressure condition, equal volume of all gases have the same number of molecules.

Avogadro's law is defined as the volume of gas is directly proportional to the number of moles of gas.

$V\propto n$

where,

V = volume of gas

n = number of moles of gas

As per the question, the volume of each gases are equal at STP.

Therefore, the number of molecules in 100 ml of each of gas at STP are the same.

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