Want this question answered?
If you think to magnesium oxide and to concentration of oxygen in MgO the answer is 40,007 33 % oxygen.
MgO
The percentage of oxygen is 28,91 %.
BeO has 64 % oxygen.
To find the percent composition of oxygen in Na2O, find the total molar mass of the compound. Then, divide the molar mass of oxygen by the molar mass of the compound, and multiply by 100% to get the percent oxygen.
60%
60%
If you think to magnesium oxide and to concentration of oxygen in MgO the answer is 40,007 33 % oxygen.
60%
MgO
Magnesium nitride (Mg3N2) has a higher percentage composition of magnesium than magnesium oxide (MgO) does. The percentage composition of magnesium in magnesium nitride is 72.2% and the percentage composition of magnesium in magnesium oxide is 60.3%.
The percentage of oxygen is 28,91 %.
This is the composition of the air.
With three oxygen atoms in five that makes it 60%
BeO has 64 % oxygen.
The percent of Mg calculated will be too high. Let's say that you reacted 1.00 g of Mg and made some MgO, but so much MgO escaped as smoke that only 1.00 g of MgO was left. You would then conclude from the numbers that the mass of O in the MgO was zero! This would lead you to conclude that the percent of Mg in the MgO was 100 %, which is silly and clearly in error. Although this is an extreme example, it illustrates that the loss of MgO as smoke from the crucible leads to a percent of Mg (calculated) that is above the expected 60.3 %.
The percent composition by element of Ca(C2H3O2)2 is calcium 25.339%, hydrogen 3.824%, carbon 30.375%, and oxygen 40.462%.