alleryMass of 1 atom of carbon (atomic mass 12) is approximately:
A12 g
B6.022 * 10^-23 g
C1.99 * 10^-23 g
D6.022 * 10^23 g
Answer & Solution
Correct answer: C. 1.99 * 10^-23 g
1. Mass of 6.022 * 10^23 atoms is 12 g.
2. So mass of 1 atom = 12 / (6.022 * 10^23).
3. = 1.99 * 10^-23 g.
4. This matches option B.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 5 'Mole Concept and Stoichiometry'_
Keep practising Mole Concept and Stoichiometry
Browse all Mole Concept and Stoichiometry questions for ICSE Class 10, or explore more Chemistry topics.
Related questions
Match each empirical formula problem with the calculated empirical formula:Match each quantity with its number of moles:Match each molecular calculation formula with its expression:Match each stoichiometric gas relationship at STP (0°C, 1 atm):Which ratio leaves no reactant in excess after completion?Under ideal-gas conditions, what can be said about gas volume ratios in a reaction?Why are molar masses of natural elements often not whole numbers?For a pure sample, what quantity is found by dividing mass by molar mass?