Jarrell937 Jarrell937
  • 19-09-2020
  • Chemistry
contestada

Which of the following formulas has the smallest percent
carbon by mass?
CF4
CO2
CH4
C204

Respuesta :

inuola1234
inuola1234 inuola1234
  • 19-09-2020

Answer: CF4

Explanation:

Calculate the molar mass of each compound. Divide the molar mass of Carbon by the molar mass of each compound, then multiply the answer by 100 to get the percentage.

CF4= 12+(19X 4)

=12+76= 88 g/mol

%C= 12/88 x 100= 13.64%

CO2= 12+(16 X 2)

12+32= 44 G/MOL

%C= 12/44 x 100= 27.3%

CH4= 12+ (1 X4)

=12+4

=16 G/MOL

%C= 12/16  X 100= 75%

C204

(12X2) + (16X4)

24+64

= 88 g/mol

%C= 24/88 x 100

= 27.3%

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