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Which of the following has the largest number of atoms when all the gases are placed at the same temperature and pressure in separate containers?

A. [tex]$100 cm^3$[/tex] of [tex]$CO_2$[/tex]
B. [tex]$150 cm^3$[/tex] of NO
C. [tex]$80 cm^3$[/tex] of [tex]$NH_3$[/tex]
D. [tex]$90 cm^3$[/tex] of [tex]$SO_2$[/tex]

Sagot :

GinnyAnswer
To determine which gas has the largest number of atoms when all are placed at the same temperature and pressure, we can use the fact that the number of atoms in a gas is directly proportional to its volume under these conditions.

Step 1: Identify the volume of each gas.
- [tex]\( CO_2 \)[/tex] has a volume of 100 cm³.
- [tex]\( NH_3 \)[/tex] has a volume of 80 cm³.
- [tex]\( NO \)[/tex] has a volume of 150 cm³.
- [tex]\( SO_2 \)[/tex] has a volume of 90 cm³.

Step 2: Compare the volumes to determine which gas has the largest volume.
- [tex]\( CO_2 = 100 \)[/tex] cm³
- [tex]\( NH_3 = 80 \)[/tex] cm³
- [tex]\( NO = 150 \)[/tex] cm³
- [tex]\( SO_2 = 90 \)[/tex] cm³

Step 3: Identify the gas with the largest volume.
- [tex]\( NO \)[/tex] has the largest volume of 150 cm³.

Therefore, the gas with the largest number of atoms, when all are placed at the same temperature and pressure in separate containers, is [tex]\( NO \)[/tex] with a volume of 150 cm³.

So the answer is:
(b) 150 cm³ of [tex]\( NO \)[/tex]
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