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waghorne, w.e.; rous, a.j. determination of the relative atomic masses of metals by liberation of molecular hydrogen. j. chem. ed. 2009, 86, 350-351.

Sagot :

By using hydrochloric acid to react with calcium, magnesium, and aluminum, and then measuring the amount of hydrogen gas that is released, determine the atomic masses of these three elements.

How is hydrogen gas volume measured?

Given that one mole of dihydrogen (H2) weighs 2,0159 g/mo and that the experimental density of hydrogen is 0,0899 g/L at 0 °C and 0,0837 g/L at 20 °C, it is possible to compute the precise molar volume of hydrogen.

How do you figure out how much hydrogen gas STP produces?

One mole of gas has a volume of 22.4 dm3 at standard pressure and temperature, or stp (0 °C, 101,500 N m-2). The students can anticipate a response of roughly 24 dm3 at ambient temperature and pressure, rtp. The volume at stp can be calculated using the equation P1V1/T1 = P2V2/T2 by more capable students.

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