mohammed280305
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. Phosphorus forms two oxides, which have the empirical formulae of P2O3 and
P2O5.
a. Which oxide contains the higher percentage of phosphorus? (Show your
calculation)
b. What mass of phosphorus will combine with 1mole of oxygen molecules
to form P2O3?
c. What is the molecular formula of the oxide that has a formula mass of
284?
d. Suggest a molecular formula for the other oxide.
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Sam_R9
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(Original post by mohammed280305)
. Phosphorus forms two oxides, which have the empirical formulae of P2O3 and
P2O5.
a. Which oxide contains the higher percentage of phosphorus? (Show your
calculation)
b. What mass of phosphorus will combine with 1mole of oxygen molecules
to form P2O3?
c. What is the molecular formula of the oxide that has a formula mass of
284?
d. Suggest a molecular formula for the other oxide.
What didn't you understand?
a. Use the relative molecular masses to calculate the percentage of phosphorus.
b. Write down balanced equations for the formation of the oxides and use stoichiometry.
c. Work out the empirical formula mass of the oxides and calculate the ratio to work out the molecular formula
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mohammed280305
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Thankyou!
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