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Blizzard [7]
3 years ago
11

A flask contains 0.340 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask.

Chemistry
2 answers:
marshall27 [118]3 years ago
7 0
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We calculate as follows:

0.340 mol Br2 ( </span>6.022 x 10^23 molecules / mol ) = 2.05 x 10^23 molecules
Andreas93 [3]3 years ago
6 0

Answer:  2.05\times 10^{23} molecules

Explanation:

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

1 mole of Br_2 contains = 6.023\times 10^{23} molecules of bromine

0.340 mole of Br_2 contains = \frac{6.023\times 10^{23}}{1}\times 0.340=2.05\times 10^{23} molecules of bromine

Thus there are 2.05\times 10^{23} molecules of bromine present in the flask.

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