How many grams are in 4.5 moles of Mg? How do you know?

Question

Maurice Cunningham

Chemistry

28 November, 21:07

How many grams are in 4.5 moles of Mg? How do you know?

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Bria · Answer 1

4. Molar mass of silver m Ms~=108 g/mol

Hence there are n=54 * (1/108) = 0.5 mols of Silver in 54 grams of Silver.

5. 6.3 * (108/1) = 680.4g

6. Avogadro's number : Na~=6.022*10^23.

6.0 * (6.022*10^23/1) = 36.132*10^23 atoms

7. Molar mass of Krypton : Mk=84 g/mol

112/84=1.33 moles of Kr

8. 1.93*10^24 * (1 / (6.022*10^23)) = 3.2 moles KF

9. Molar mass of Silicon : Ms=28 g/mol

86.2 * (1/28) * (6.022*10^23/1) = 18.5*10^23 atoms of silicon

10. Molar mass of Magnesium : M1=24 g/mol

4.8*10^24 * (1 / (6.022*10^23)) * (24/1) = 191 g Mg