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Alex
3 years ago
10

Would someone mind helping me? I really need this answer but I'm so confused. I would appreciate any help :) and if you get the

answer right, ill give you brainliest.

Chemistry
2 answers:
Svetllana [295]3 years ago
7 0

Answer:

A

Explanation:

liquids thake the shape of what holds them so shape is changing and volume is the same

iogann1982 [59]3 years ago
6 0
Your answer would be letter A!! goodluck with your quiz ig
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How many moles of N2 in 57.1 g of N2?
SpyIntel [72]

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}

\qquad\bf  \twoheadrightarrow 2.04\: moles

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calculate atomic weight of silver which has two isotopes with the following properties : silver-107 (106.91 amu, 51.84% natural
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Mass of isotope silver-107  = 106.91 amu

% abundance of isotope silver -107 = 51.84% = \frac{51.84}{100}=0.5184

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A=\sum[(106.91\times 0.5184)+(108.90\times 0.4816)]

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