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8. A rigid tank contains 71.5 g of chlorine gas (Cl₂). a temperature of 70 °C and an absolute pressure of 5.80 x 105 Pa.
Later, the temperature of the tank has dropped to 32 °C and, due to a leak, the pressure has dropped to 3.30 x 105 Pa.
How many grams of chlorine gas have leaked out of the tank? (The mass per mole of Cl₂ is 70.9 g/mol.)
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