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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Chemistry, 22.06.2019 11:00, snowprincess99447
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Chemistry, 22.06.2019 13:50, hannahmyung1113
Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.
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Chemistry, 22.06.2019 13:50, amandamac7339
Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
Answers: 1
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