# Elemental phosphorus reacts with chlorine gas according to the equationP4(s)+6Cl2(g)→4PCl3(l)A reaction mixture initially contains 45.53 g P4 and 130.9 g Cl2.Once the reaction has reached completion, what mass (in g) of the excess reactant is left?        Express the mass in grams to three significant figures.

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Elemental phosphorus reacts with chlorine gas according to the equation
P4(s)+6Cl2(g)→4PCl3(l)
A reaction mixture initially contains 45.53 g P4 and 130.9 g Cl2.

Once the reaction has reached completion, what mass (in g) of the excess reactant is left?
Express the mass in grams to three significant figures.
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Step 1

Given that the initial mass of P4 is 45.53 g and mass of Cl2 is 130.9 g. The initial moles of both reactants can be determined.

Step 2

From the balanced equation, it can be seen that one mole P4 reacts w...

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