Answer:
0.45 moles of air are in a 3.0 L balloon
Explanation:
The given problem can be solved by using unitary method.
Firstly, we have to find out how many breaths are equivalent to 3.0 L. Secondly, we have to find out how many moles of air are supplied corresponding to the calculated number of breaths.
1.2 L = 3 breaths
So, 3.0 L = [tex]\frac{3}{1.2}\times 3.0[/tex] breaths = 7.5 breaths
1 breath supplies 0.060 moles of air
So, 7.5 breaths supplies [tex](7.5\times 0.060)[/tex] moles of air or 0.45 moles of air.
Hence, 0.45 moles of air are in a 3.0 L balloon.
