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 Free
Topic: Mole Concept·Practice all Mole Concept questions

More Mole Concept Questions

A 1.50 g sample of potassium bicarbonate having 80% purity is strongly heated. Assuming the impurity to be thermally sta...The molec1ularity of a complex reaction given below is :- 2N2O5 (g) → 4NO2(g) + O2(g)...The mass composition of universe may be given as 90% H2 and 10% He. The average molecular mass of universe should be...On reduction with hydrogen, 3.6 g of an oxide of metal left 3.2g of metal. If the vapour density of metal is 32, the sim...A quantity of 2.76 g of silver carbonate on being strongly heated yields a residue weighing (Ag = 108)...