Average atomic mass of magnesium is 2...

Average atomic mass of magnesium is 24.31 amu. This magnesium is composed of 79 mole ` %` of `.^(24)Mg` and reamainig 21 mol `%` of `.^(25)Mg` and `.^(26)Mg`. Calculate mole `%` of `.^(26)Mg`.

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Average atomic mass of magnesium is 24.31 amu. This magnesium is composed of 79 mole % of 24mg and remaining 21 mole % of 25mg and 25mg . Calculate mole % of 26mg .

In a periodic table, the averge atomic mass of magnesium is given as 24.312 u . The average value is based on their relative natural abundance on earth. The three isotopes and their masses are ._12Mg^(24) (23.98504u) , ._(12)Ng^(25) (24.98584) and ._12Mg^(26) (25.98259 u) . The natural abundance of ._12Mg^(24) is 78.99% by mass. Calculate the abundances of the other two isotopes.

Calcualte the number of moles of magnesium present in a magnesium ribbon weighting 12g. Molar atomic mass of magnesium is 24 g mol^(-1) .

Assertion: The average mass of one Mg atom is 24.305 amu , which is not actual mass of one Mg atom. Reason: Three isotopes, 24 Mg, 25 Mg and 26 Mg , of Mg are found in nature.

Calculate the mole ratio of 240 g of calcium and 240 g of magnesium. (Ca = 40 , Mg = 24 u)

In magnesium sulphide, the ratio by mass of Mg and S is 3:4. What is the ratio of number of Mg and S atoms?

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