Atomic number of carbon is 6 and hydrogen is 1, How many electrons are present In 1.6 grams of methane?
Correct answer: A. 6.02 x 10²³
- A. 6.02 x 10²³
- B. 1.204 x 10²³
- C. 1.806 x 10²³
- D. 2.408 x 10²³
- E. 3.01 x 10²³
Explanation
To determine the number of electrons in 1.6 grams of methane (CH4), we first need to calculate the number of moles of methane present: Calculate the molar mass of methane: Molar mass of C = 12.01 g/mol Molar mass of H = 1.01 g/mol Molar mass of CH4 = (4 × 1.01 g/mol) +12.01 g/mol = 16.05 g/mol Calculate the number of moles of CH4: Moles of CH4 = mass of CH4 /molar mass of CH4 Moles of CH4= 1.6g / 16.05 = 0.0997 mol Calculate the number of electrons in 0.0997 mol of CH4: Each molecule of CH4 contains 10 electrons (4 from carbon and 1 from each of the four hydrogen atoms) Therefore, the number of electrons in 0.0997 mol of CH4 is: Number of electrons = 0.0997 mol × 6.02×10²³ molecules/mol × 10 electrons/molecule Number of electrons = 6.02 ×10²³electrons Therefore, there are approximately 6.02 × 10²³ electrons in 1.6 grams of methane.
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