Mole ConceptHard
Question
If ‘JAYARAO BANDA’ is written by a graphite pencil, it weighs 3.0 × 10–10 g. How many carbon atoms are present in it? (NA = 6 × 1023)
Options
A.1.5 × 1013
B.5 × 1012
C.2 × 1033
D.1.5 × 1010
Solution
Number of C-atoms =$\frac{3.0 \times 10^{- 10}}{12} \times 6 \times 10^{23} = 1.5 \times 10^{13}$
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
The percentage by volume of C3H8 in a mixture of C3H8, CH4 and CO is 36.5. The volume of CO2 produced when 100 ml of the...A volume of 10 ml chlorine gas combines with 25 ml of oxygen gas to form 10 ml of a gaseous compound. If all the volumes...SO2 gas is slowly passed through an aqueous suspension containing 12 g of CaSO3 till the milkiness just disappears. What...A gaseous mixture contains 40% H2 and 60% He by volume. What is the total number of moles of gases present in 10 g of su...In which of the following pairs, 10 g of each have an equal number of molecules ?...