Calculate the amount of substance and the mass of magnesium oxide taken by the number

| January 31, 2021 | education

Calculate the amount of substance and the mass of magnesium oxide taken by the number of structural particles 24.08 * 10 ^ 23.

To solve this problem, recall the Avogadro number, which shows the number of structural units in 1 mole of substance. Avogadro’s number is 6.02 * 10 ^ 23

Knowing this constant and the number of structural units of a substance (in our case, magnesium oxide molecules), it is easy to calculate the amount of a substance.

N = 24.08-10 ^ 23 / 6.02 * 10 ^ 23 = 4 mol of MgO substance.

Now, knowing the amount of this substance, you can calculate its mass. To do this, multiply the molar mass of magnesium oxide by the amount of substance. The molar mass of magnesium oxide is 40 g / mol.

m = 40 * 4 = 160 g.

Answer: 4 mol, 160 g of magnesium oxide.



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