## Avogadro’s Law states that at a given temperature and pressure, what quantity is constant? A. V.

Avogadro’s Law states that at a given temperature and pressure, what quantity is constant?

A. V + n

B. V * n

C. V/n

If it takes ‘breaths’ to blow up a balloon to 1.2 L, and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in 3.0 L balloon?

Express your answer to two decimal places and include the appropriate units.

## Answer ( 1 )

Avogadro’s Law:

The Avogadro’s law is one of the most significant gas laws used to portray the conduct of a perfect(ideal) gas, as it relates the volume and number of moles of a perfect gas under steady weight and temperature. The law demonstrates an immediate connection between the quantity of moles and the volume of a perfect gas through the condition

V1/n1=V2/n2

where V1/V2 and n1/n2 are the underlying and last volume/number of moles of the perfect gas, individually.

Answer and Explanation:

Avogadro’s law demonstrates a straight proportionality between the volume VV and number of moles nn of a perfect gas. This implies the proportion among the two is steady, or

V/n=k

where k is consistent of proportionality. Thus, the amount that is steady in Avogadro’s law is

C.V/n

The gas, as air from a breath, has the underlying conditions

V1=1.2 L

n1=0.060 moles

From Avogadro’s law,

V1/n1=V2/n2

With this, the quantity of moles for a 3.0 L inflatable is given by

n2=n1V2/V1 = (0.060 mol) (3.0 L)/1.2 L =0.18 mol L/1.2 L n2=0.15 mol

The quantity of moles of the air increments as the volume of the inflatable was expanded, which is predictable to Avogadro’s law. In this manner, the quantity of moles of air for a 3.0 L inflatable is

nnew =0.15moles