Acommon way to make hydrogen gas in the laboratory is to place a metal such as zinc in hydrochloric acid (see the figure). the hydrochloric acid reacts with the metal to produce hydrogen gas, which is then collected over water. suppose a student carries out this reaction and collects a total of 144.2 ml of gas at a pressure of 742 mmhg and a temperature of 25? c. what mass of hydrogen gas (in mg) does the student collect? (the vapor pressure of water is 23.78 mmhg at 25? c.)
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Acommon way to make hydrogen gas in the laboratory is to place a metal such as zinc in hydrochloric...
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