Naseeem88
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Convert 26.02 x 1023 molecules of C2H8 to grams. Round your answer to the hundredths place.

Convert 2602 X 1023 Molecules Of C2H8 To Grams Round Your Answer To The Hundredths Place class=

Sagot :

No of molecules=26.02×10²³molecules

No of moles

  • 26.02×10²³/6.023×10²³
  • 4.3mol

Molar mass

  • C2H8
  • 2(12)+8(1)
  • 24+8
  • 32g/mol

Mass

  • Moles×Molar mass
  • 32(4.3)
  • 137.6g
MercilessSpark

[tex]\\ \tt{:}\longrightarrow No\:of\:moles=\dfrac{Molecules}{Avagadro\:no}[/tex]

[tex]\\ \tt{:}\longrightarrow No\:of\:moles=\dfrac{26.02\times 10^{23}}{6.023\times 10^{23}}[/tex]

[tex]\\ \tt{:}\longrightarrow No\:of\:moles=4.32mol[/tex]

  • Molar mass of Ethane=32g/mol

We need the mass

[tex]\\ \tt{:}\longrightarrow No\:of\:moles\times molar\:mass[/tex]

[tex]\\ \tt{:}\longrightarrow 32(4.32)[/tex]

[tex]\\ \tt{:}\longrightarrow 138.24g[/tex]

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