Percentage composition of mass in CO2 is:
Correct answer: C. 27 .37% carbon & 72.72% Oxygen
- A. 30.45% Carbon & 69.54% Oxygen
- B. 24.22% Carbon & 75.78% Oxygen
- C. 27 .37% carbon & 72.72% Oxygen
- D. 41.68% Carbon & 58.12% Oxygen
Explanation
The atomic weight of carbon is 12 grams and that of oxygen is 16 grams. Hence we have calculated the mass 5 of carbon in carbon dioxide to be 27.37% and 72.72% oxygen.
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The mole connects the microscopic number of particles with measurable mass, using Avogadro's number, 6.022 × 10²³ particles per mole. Questions involve molar mass, conversion between mass, moles and particles, percentage composition, empirical and molecular formulas, and distinguishing atoms, molecules, ions and formula units.
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