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PolarNik [594]
3 years ago
15

Magnesium oxide is a binary ionic compound. From its formula, MgO, how do you know that Mg is the metal?

Chemistry
2 answers:
Vlad [161]3 years ago
8 0
Magnesium is a metal on the periodic table

leva [86]3 years ago
6 0
<h2>Answer:</h2>

<u><em>According to formula, magnesium gives electron forming a cation which is the property of metals according to periodic table.</em></u>

<h3>Explanation:</h3>
  • Mg has a valency of two electrons which means it has two electron in the valence shell. It gives two electrons to an oxygen atom which becomes a anion.
  • They form two ionic bond forming MgO.
  • And the atoms of valency two are present in 2nd column which contains metals.
  • Hence from formula, it can be known that Mg is a metal.









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<u>Explanation:</u>

To calculate the mass for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Actual moles of lithium chlorate = 9.45 moles

Molar mass of lithium chlorate = 90.4 g/mol

Putting values in above equation, we get:

9.45mol=\frac{\text{Actual yield of lithium chlorate}}{90.4g/mol}\\\\\text{Actual yield of lithium chlorate}=(9.45mol\times 90.4g/mol)=854.28g

To calculate the theoretical yield of lithium chlorate, we use the equation:

\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100

Actual yield of lithium chlorate = 854.28 g

Percentage yield of lithium chlorate = 81.0 %

Putting values in above equation, we get:

81=\frac{854.28g}{\text{Theoretical yield of lithium chlorate}}\times 100\\\\\text{Theoretical yield of lithium chlorate}=\frac{854.28\times 100}{81}=1054.67g

Hence, the theoretical yield of the lithium chlorate is 1054.67 grams

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2 years ago
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