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SELECT ALL THAT APPLY
at STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g)
1. Will contain the same number of molecules
2. Will contain the same number of atoms
3. Will occupy the same volume
4. Will have the same g.f.w

Respuesta :

Hagrid
at STP conditions, 0.25 moles of CO2(g), H2(g), NH3(g)

The answers are:
1. Will contain the same number of molecules 
3. Will occupy the same volume

Answer: The correct answer is Option 1 and Option 3.

Explanation:

We are given:

0.25 moles of [tex]CO_2,H_2\text{ and }NH_3[/tex]

STP conditions states that 1 mole of a gas occupies 22.4 L of volume.

The volume occupied by all the gases at STP will be [tex]0.25\times 22.4=5.6L[/tex]

According to mole concept: 1 mole of a compound contains [tex]6.022\times 10^{23}[/tex] number of molecules or 1 mole of an element contains [tex]6.022\times 10^{23}[/tex] number of atoms.

We know that the given gases are compounds. Thus, all the three gases will have [tex]0.25\times 6.022\times 10^{23}=1.5055\times 10^{23}[/tex] number of molecules.

Hence, the correct answer is Option 1 and Option 3.

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