Question map
Not attempted
Correct
Incorrect
★
Bookmarked
Loading…
Q18
(CDS-II/2017)
Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic chemical principles
Answer Verified
How many hydrogen atoms are contained in 1-50 g of glucose (C6H1206)?
Result
Your answer:
—
·
Correct:
D
Explanation
To find the number of hydrogen atoms in 1.50 g of glucose (C6H12O6), we first determine the molar mass of glucose. Summing the atomic masses of 6 carbon, 12 hydrogen, and 6 oxygen atoms yields approximately 180 g/mol. The number of moles in 1.50 g is calculated by dividing the mass by the molar mass: 1.50 g / 180 g/mol ≈ 0.00833 moles. Since each molecule of glucose contains 12 hydrogen atoms, one mole of glucose contains 12 moles of hydrogen atoms. Using Avogadro's number (6.022 x 10^23), the total number of hydrogen atoms is calculated as: 0.00833 moles!! 12!! 6.022 x 10^23 ≈ 6.02 x 10^22 atoms. This matches option 4.
How others answered
Each bar shows the % of students who chose that option.
Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
37%
got it right
✓ Thank you! We'll review this.