Oxygen molecules

Chemistry Level 2

Consider an adult whose lung capacity is 5 liters. If the lungs are filled with 100% oxygen gas at NTP, how many molecules of oxygen gas are present at maximum capacity?

3 \times 10^{23}

6.02 \times 10^{23}

1.25 \times 10^{23}

9.4 \times 10^{25}

3.9 \times 10^{22}

1 solution

Asad Ali
Jul 19, 2016

5000= $\frac{1}{24000}$ x 5000

=> 0.208 moles => 0.208 x avagadros no = 1.25 x 10e23

Whre did you get 5000

Mr Yovan - 4 years, 11 months ago

actually .. Max capacity of lung is 5 L = 5000 cm3 if you have 5000 cm3 of any gas it is equal to = 1/24000 x 5000 which gives moles of the gas

Asad Ali - 4 years, 11 months ago

Thanks now i got it

Mr Yovan - 4 years, 10 months ago

@Asad Ali The total lung capacity (TLC), about 6,000 mL, is the maximum amount of air that can fill the lungs (TLC = TV + IRV + ERV + RV). The vital capacity (VC), about 4,800 mL, is the total amount of air that can be expired after fully inhaling (VC = TV + IRV + ERV = approximately 80 percent TLC). using 6000ml , answer comes out to be a) option

Saraswati Sharma - 4 years, 7 months ago

Oxygen molecules

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