dbn4everloved8
15.07.2019 •
Chemistry
What is the mass in grams of 1.02 x 1024 atoms manganese (mn)? a. 0.112 x 101 g c. 9.30 x 10-1g b. 0.169 x 101 g d. 9.31 x101 g select the best answer from the choices provided a b c d
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Ответ:
Option (d) is the correct answer.
Explanation:
According to Avogadro's number, every 1 mole of a substance contains atoms or particles.
Now, it is given that there are atoms of manganese are present. Hence, calculate its number of moles as follows.
No. of moles =
= 1.69 mol
As we know that, number of moles is equal to mass of a substance divided by its molar mass. Since, molar mass of manganese is 54.93 g/mol.
No. of moles =
1.69 mol =
mass = 93 g
Therefore, we can conclude that the mass in grams of atoms of manganese (Mn) are .
Ответ: