Question

How many atoms of carbon are in 6.00g of carbon?

a) 1.20x10²⁴atoms C
b) 6.02x10²³atoms C
c) 3.01x10²³atoms C
d) 1.50x10²³atoms C

Answer 1

Answer:

b) 6.02*10^23 atoms C

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Answer 2

Given,

Given mass 'm' = 6 gm

Molar mass 'M' = 12 gm

To find,

We have to find the number of atoms 'N'

Solution,

There are  3.011 * 10²³ moles of atoms of carbon in 6 gm of carbon.

We can simply find the number of atoms by using the mole concept.

Number of moles = given mass/molar mass

Number of moles = 6/12

Number of moles = 1/2

Number of atoms = Number of moles * Avogadro's number

                             = 1/2 * 6.022 * 10²³

                             = 3.011 * 10²³

Hence, there are  3.011 * 10²³ moles of atoms of carbon in 6 gm of carbon.