A student noticed that the magnesium tape appeared to be oxidized – the metal surface was black and matte rather than silver and shiny. What effect would this error have on the measured volume of hydrogen gas? Would the calculated molar volume of hydrogen be too high or too low because of this error? Explain.
if the number of moles increases, the volume will also increase. If a smaller volume were recorded, a lower calculated molar mass would be observed because, there would be a smaller volume than its number of moles, because the number of moles of hydrogen gas is theoretically found with the amount of Mg used. 8. A student noticed that the magnesium tape looked oxidized – the metal surface was black and matte instead of silver and shiny. What effect would this error have on the measured volume of hydrogen gas? Would the calculated molar volume of hydrogen be too high or too low because of this error? Explain. If the Mg band were oxidized, the volume of hydrogen gas recorded would be less than the ideal result because less Mg would react to produce hydrogen gas. This would result in a decrease in molar volume because there would be less volume per mole of hydrogen. The decrease in molar volume would contribute to a higher density because the mass would be divided by the smaller volume. Conclusion The objective of this lab was to determine the molar volume of H2(g) at STP. We were able to accomplish this task by reacting a known amount of Mg with HCl in a eudiometer tube filled with water so that the volume of gas created was measurable. The main objective of the laboratory
Explanation: because if you increase the number you will get this
it should be noted that an alpha particle is a helium nucleus. it therefore contains 2 protons 2 neutrons and has a mass number of 4. when the alpha decay particles are ejected from the nucleus, it transforms into an atom which has an atomic number less than 2 and a mass number less than 4. an equation that could represent alpha decay is radium 226 the decay of alpha particles forms radon 222. →
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