1 out of 3 attempts Enter your answer in the provided box. Assistance Check My W

Question

1 out of 3 attempts Enter your answer in the provided box. Assistance Check My Work View Hint View Question Show Me Guided Solution Practice This Question Print Question Help Report a Problem Sodium peroxide (Na202) is used to remove carbon dioxide from (and add oxygen to) the air supply in spacecrafts. It works by reacting with CO2 in the air to produce sodium carbonate (Na2CO3) and O2. 2Na 202(s) +2CO2(g) 2Na2CO3(s) +O2(g) What mass (in grams) of Na202 is necessary to consume 1.00 L CO2 at STP?

Explanation / Answer

molar volume at STP is 22.4 L/mol

So,

moles of CO2 = volume / molar volume

= 1.00 L / 22.4 L/mol

= 0.04464 mol

Molar mass of Na2O2 = 2*MM(Na) + 2*MM(O)

= 2*22.99 + 2*16.0

= 77.98 g/mol

we have below equation to be used:

mass of Na2O2,

m = number of mol * molar mass

= 4.464*10^-2 mol * 77.98 g/mol

= 3.48 g

Answer: 3.48 g

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