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Phoenix [80]
3 years ago
6

How many electrons can the first energy level hold

Chemistry
2 answers:
Kipish [7]3 years ago
5 0

Answer:

Explanation:

the answer is two electrons im positive

notsponge [240]3 years ago
5 0

Answer:

2 electrons

Explanation:

<h2><u>How many electrons can the first energy level hold</u></h2><h3>- 2 electrons</h3>

the first shell can hold up to 2 electrons, the second shell can hold up to 8 electrons and the third shell can hold up to 18 electrons

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What is Mass perventage ?

Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100.

Molecular mass of urea (NH2CONH2) is= 2× (Atomic mass of N ) + 4 × (Atomic mass of H) + (Atomic mass of C) (Atomic mass of O) = 60

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molar mass of C6H14N4O2=174g/mol

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the chemical formula for ornithine is C5H12N2O2

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moles of N atoms in C5H12N2O2=2

mass of N atoms in C5H12N2O2=2*14=28

mass percent of N in C5H12N2O2=(28/132)*100=21%

To learn more about urea click on the link below:

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