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3 years ago

Calculate the percent by mass of carbon in CO2 (carbon dioxide).

Chemistry

2 answers:

Lady_Fox [76]3 years ago

5 0

Answer:

Explanation:

% by mass of C = (mass of C/mass of CO2) X 100%

mass of C = 12

mass of CO2 = 12 + (16X2)

= 12 + 32

= 44

% by mass of C = (12/44) X 100% =27.2%

FromTheMoon [43]3 years ago

4 0

Answer:

The answer to your question is 27.3 %

Explanation:

Percent by mass = ?

Process

1.- Calculate the atomic mass of carbon using the periodic table

Atomic mass = 12g

2.- Calculate the molecular mass of CO₂.

Carbon = 12

Oxygen = 16 x 2 = 32

Total = 12 + 32 = 44g

3.- Calculate the percent by mass of carbon using proportions

44g -------------------- 100%

12 g ------------------- x

x = (12 x 100) / 44

x = 1200 / 44

x = 27.3 %

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Answer:

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What will be the new volume of a 250 mL sample of gas at 300 K and 1 atm if heated to 350 K at 1 atm?

AlekseyPX

The new volume of a 250 Ml sample of gas at 300k and 1atm if heated to 350 k at 1 atm is 291.67 Ml

calculation

This is solved using the Charles law formula since the pressure is constant.

that is V1/T1 = V2/T2 where,

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