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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Water can be formed in the following reaction:

just olya [345]

Answer

Explanation

We have a balanced chemical equation from the question that depicts the formation of water.

2H2+O2-->2H2O,

We can clearly see from the equation that, the formation of 2 moles of water molecules requires the input of 2 moles of hydrogen and 1 mole of Oxygen.

So indirectly, it tells that the moles of water molecules will be double of the moles of Oxygen molecules used in the reaction.

So if we say that 6 moles of oxygen is used and the reaction is going in such a way that hydrogen is not a limiting reactant, then 12 moles of water will be produced.

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8 0

3 years ago

A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold water, what woul

gayaneshka [121]

Answer:

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Explanation:

Heat gain by water = Heat lost by the slice of pizza

Thus,

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