Chemistry, asked by Vegeta1, 1 year ago

calculate mass of 2.8 litres of Co2 . [C=12 , O=16]

Answers

Answered by Madrit
113
Mass of 1 mole CO2=44gm
1 mole=22.4L
therefore, mass of 22.4L=44gm
Mass of 2.8L=
 \frac{2.8}{22.4}  \times 44 =  \frac{44}{8}
Answered by kobenhavn
25

Answer: 5.5 grams

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass ,contains avogadro's number 6.023\times 10^{23} of particles and occupy 22.4 L at STP.

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given volume}}{\text{Molar volume}}=\frac{2.8L}{22.4L}=0.125

1 mole of CO_2 weigh = 44 g

0.125 moles of CO_2 weigh = \frac{44}{1}\times 0.125=5.5grams

Thus mass of 2.8 litres of CO_2 is 5.5 grams

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