If it takes three "breaths" to blow up a balloon to 1.2 , and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 balloon.
Express your answer in moles using two significant figures
Would the answer be 0.38 mol?
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.45 moles
To find the answer, we need to use the information given. Let's break down the problem step by step:
1. We know that it takes three "breaths" to blow up a balloon to 1.2 L.
2. Each breath supplies the balloon with 0.060 moles of exhaled air.
To find the number of moles of air in a 3.0 L balloon, we can set up a proportion:
(0.060 mol / 1.2 L) = (x mol / 3.0 L)
Now, let's solve for x by cross-multiplying:
0.060 mol * 3.0 L = 1.2 L * x mol
0.18 mol L = 1.2 L * x mol
Finally, divide both sides of the equation by 1.2 L to isolate x:
(0.18 mol L) / 1.2 L = x mol
0.15 mol = x mol
The answer is indeed 0.15 mol, not 0.38 mol.