According to avogadro's law, 1 mole of every substance weighs equal to molecular mass , occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

Given mass of ethanol = 0.2301

Molar mass of ethanol = 46.07 g/mol

$\text{Number of moles of ethanol}=\frac{0.2301g}{46.07g/mol}=4.994\times 10^{-3}$

Thus there are $4.994\times 10^{-3}$ moles of ethanol are present in the sample.

7 0

3 years ago

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Atom 1 has 6 electrons. It gains 2 more electrons from atom 2 which has 5 electrons. Who will be in charge of Atom 1 and Atom 2?

avanturin [10]

Answer:

Atom 1 after gaing 2 electrons have -2 charge

And atom 2 after donating 2 electrons have +2 charge

Explanation:

8 0

2 years ago

Which of the following represents the greatest number of moles? please help! :)

zloy xaker [14]

Answer:

Helium

Explanation:

He- 3.99739969150064 (4)

S-0.498986433806336 (0.5)

Li-3.02550064832148 (3)

B-2.959948200906496 (3)

5 0

2 years ago

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