chemistry

Hi, please help me with this question
If 600 mL of 0.283 M aqueous NaBr and 15.9 L of gaseous Cl2 measured at STP are reacted stoichiometrically according to the balanced equation, how many liters of gaseous Cl2 measured at STP remain? Round your answer to 3 significant figures.

2NaBr(aq) + Cl2(g) ¡æ 2NaCl(aq) + Br2(l)

Molar Mass (g/mol)
NaBr 102.89
Cl2 70.906


Molar Volume (L)
22.4 at STP

Gas Constant
(L.atm.mol-1.K-1)
0.0821

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