Respuesta :
Answer:
A
Explanation: n = m/M = 38,72/ (M{CO2}) = 38,72 / 44
There are 0.88 moles of CO₂ in 38.72 gram sample of the compound.
What is a mole ?
The mole is a unit for measuring the amount of a substance.
1 mol equals the number of particles in 12.0 g of carbon-12.
mol is the abbreviation used for mole.
It is given in the question 38.72 gram of CO₂ is present in the sample
Moles of CO₂ has to be calculated
1 mole = molar mass of a compound
Molar mass of CO₂ is 44g
44 gram of CO₂ makes 1 mole
So 38.72 gram will make 38.72*1 / 44
= 0.88 moles
Therefore ,There are 0.88 moles of CO₂ in 38.72 gram sample of the compound.
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