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fgiga [73]
3 years ago
10

How many electrons are there in 2 g of H2

Chemistry
1 answer:
KiRa [710]3 years ago
4 0

Answer:

6.02 x 10²³ electrons

Explanation:

Given parameters:

Mass of H₂  = 2g

Unknown:

Number of electrons = ?

Solution:

To find the number of electrons, we must determine the number of moles of H₂ first.

 Number of moles  = \frac{mass}{molar mass}  

  Molar mass of H₂   = 2(1)  = 2g/mol

Number of moles  = \frac{2}{2}   = 1mol  

1 mole of a substance contains 6.02 x 10²³ particles

the particles can be protons, neutrons, electrons

So,

  2g of H₂ will contain 6.02 x 10²³ electrons.

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