The water level in a graduated cylinder was at 211 rises, Ask an Expert

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A tightly sealed 5 litres flask has argon (Ar) at (6.28x10^1) deg. C and 781 mm Hg. determine the temperature of the gas if the flask is heated until the pressure is doubled.

The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?

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