Question

How many coulombs of positive charge are there in 0.1 kg of carbon? Twelve grams of carbon contain Avogadro's number of atoms, with each atom having six protons and six electrons.

Answer 1

Answer:

$481.84\times 10^{4}$

Explanation:

We have given the mass of the carbon =0.1 kg

Molar mass of the carbon =12 gram

Number of moles $n=\frac{0.1}{0.012}=8.333$

We know that 1 mole of carbon contain $6.023\times 10^{23}atoms$

So atoms contained by 8.333 moles $=8.333\times 6.023\times 10^{23}=50.191\times 10^{23}atoms$

In question it is given that each atom contain 6 proton so number of proton $6\times 50.191\times 10^{23}atoms=301.15\times 10^{23}proton$

Now we know that each proton contain positive charge of $1.6\times 10^{-19}C$

So total charge $=1.6\times 10^{-19}\times 301.15\times 10^{23}=481.84\times 10^{4}C$