question archive Calculate the total number of ions in one mole of magnesium nitrate, Mg(NO3)2

Calculate the total number of ions in one mole of magnesium nitrate, Mg(NO3)2

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Calculate the total number of ions in one mole of magnesium nitrate, Mg(NO3)2. Give the answer to 3 significant figures __ . __ __ × 1024 .

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Answer:

1.81

Explanation:

1 molecule of Mg(NO3)2 contains 3 ions: one magnesium ion and two nitrate ions.

Now, 1 mole of magnesium nitrate contains 6.023*10²³ molecules.

So, 1 mole of magnesium nitrate contains 3*6.023*10²³ ions.

So, 1 mole of magnesium nitrate contains 18.069*10²³ ions.

So, 1 mole of magnesium nitrate contains 1.81*10²? ions.

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