1. What is the meaning of the word mole in Chemistry?

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2. What are the units for amount in Chemistry?

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3. Calculate the relative formula mass(Mr) of zinc phosphide (Zn₃P₂)

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4. Calculate the relative formula mass(Mr) of a molecule of bromine (Br₂)

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5. Complete the following expression: mass =

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6. What mass of carbon dioxide is produced when 24g of carbon undergoes completely combustion?

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7. What is the equation linking moles, Mᵣ and mass

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8. What do each of the following state symbols represent: (s), (l), (g), (aq)

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9. What mass of calcium bromide will fully react with 71g of chlorine?

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10. Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)

Question 10 of 10