Average atomic mass of magnesium is 24.3...

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`.

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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 .

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.

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.

A mixture of magnesium chloride and magnesium sulphate is known to contain 0.6 moles of chloride ion and 0.2 moles of sulphate ions. For quantitative estimation of Mg, above mixture is treated with set of reagents to form Mg_(2)P_(2)O_(7) produced is:

Number of moles of magnesium in a metallic piece of magnesium containing 8.46 xx10^(24) atom are

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?

NARENDRA AWASTHI-STOICHIOMETRY-Level 3 - Subjective Problems

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