IG Chem – Relative Masses of Atoms and Molecules
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Question 1 of 10
1. Question
1 point(s)The relative atomic mass of an element is the mass of one atom of that element compared to carbon-12.
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Question 2 of 10
2. Question
1 point(s)The relative atomic mass of carbon is 24.
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Question 3 of 10
3. Question
1 point(s)One atom of magnesium is 24 times the mass of one atom of hydrogen.
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Question 4 of 10
4. Question
1 point(s)The relative atomic mass of copper is twice that of sulfur.
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Question 5 of 10
5. Question
1 point(s)The relative formula mass of water (H₂O) is 18.
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Question 6 of 10
6. Question
1 point(s)The relative formula mass of carbon dioxide (CO₂) is 28.
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Question 7 of 10
7. Question
1 point(s)One mole of atoms contains approximately 6.02 × 10²³ atoms, known as the Avogadro constant.
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Question 8 of 10
8. Question
1 point(s)The relative formula mass of magnesium oxide (MgO) is 40.
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Question 9 of 10
9. Question
1 point(s)The formula of copper(II) oxide is Cu₂O.
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Question 10 of 10
10. Question
1 point(s)In the reaction to form magnesium oxide, 0.24 g of magnesium reacts with 0.16 g of oxygen.
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