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Phoenix [80]
2 years ago
12

What is the molar mass of a substance?

Chemistry
1 answer:
OlgaM077 [116]2 years ago
4 0

oops pls forgive me I accidentally did the wrong question.

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As an electron gains energy, it becomes excited and jumps to a lower energy level?
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How many moles of N2 in 57.1 g of N2?
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We are given –

  • Mass of \bf N_2 is 57.1 g and we are asked to find number of moles present in 57.1 g of \bf N_2

\qquad\pink{\bf\longrightarrow  { Molar \:mass \:of \: N_2:-}  }

\qquad\bf  \twoheadrightarrow 14\times 2

\qquad\bf \twoheadrightarrow   28

\qquad____________________

Now,Let's calculate the number of moles present in 57.1 g of \bf N_2

\qquad\purple{\bf\longrightarrow  { No \:of \:moles = \dfrac{Given \:mass}{Molar\: mass}}}

\qquad\bf   \twoheadrightarrow \dfrac{57.1}{28}

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Which part of a star does the star’s energy come from?
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Explanation:

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