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Ivenika [448]
3 years ago
5

feel free to answer any of these. i need the answer to the appropriate amount of significant figures on this pleasee

Chemistry
1 answer:
jekas [21]3 years ago
4 0

Answer:

6. (2.7*10^{5})

8. (1.0*10^{4})

Explanation:

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The number of mole of ethanol present in the beaker is 0.217 mole

Description of mole
The mole of a substance is related to it's mass and molar mass according to the following equation:
Mole = mass / molar mass

How to determine the mole of C₂H₅OH
From the question given above, the following data were obtained:
Mass of C₂H₅OH = 10 g
Molar mass of C₂H₅OH = (12×2) + (1.01×5) + 16 + 1.01 = 46.06 g/mol
Mole of C₂H₅OH =?

Mole = mass / molar mass
Mole of C₂H₅OH = 10 / 46.06
Mole of C₂H₅OH = 0.217 mole


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