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A helium-filled weather balloon has a volume of 883 L at 21.9°C and 753 mmHg. It...

A helium-filled weather balloon has a volume of 883 L at 21.9°C and 753 mmHg. It is released and rises to an altitude of 8.50 km, where the pressure is 291 mmHg and the temperature is –33.1°C. The volume of the balloon at this altitude is _______ L.

What volume of hydrogen gas is produced when 66.8 g of iron reacts completely according to the following reaction at 25 °C and 1 atm? iron (s) + hydrochloric acid(aq)iron(II) chloride (aq) + hydrogen(g) _________ liters hydrogen gas

An iron nail rusts when exposed to oxygen. How many grams of iron are needed to completely consume 32.7 L of oxygen gas according to the following reaction at 25 °C and 1 atm? iron ( s ) + oxygen ( g ) iron(III) oxide ( s ) ______ grams iron

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