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2 years ago

A sample of carbon dioxide gas (CO2) contains 8.551 x 10^25 molecules. How many moles of carbon dioxide does this represent

2 answers:

0 0

Answer:

142.0mol CO2

Explanation:

To convert from molecules to moles we must divide the amount of molecules by Avagadro’s number, 6.02 x 10^23.

8.551 x 10^25 / 6.02 x 10^23 = 142.0mol CO2

vladimir1956 [14]2 years ago

0 0

Answer:

Explanation:

moles= no. of molecules/ avagardo number

=8.511*10^25/ 6.022*10^23

=14.13 moles

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x = 7.7 x 10 ⁻⁹ mol

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x = 4.64 x 10¹⁵ molecules

b) 130 g of C7H14O2 ---------------- 1 mol of C7H14O2

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x = 7.7 x 10 ⁻⁹ mol of C7H14O2

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