Consider the reaction of a piece of zinc reacting with hydrochloric acid. The gas is collected above water based on the data below. Zn(s) + 2HCl(aq) > ZnCl2(aq) + H2(g)
b. Determine the pressure of the gas formed.
c. Determine the volume (mL) of gas collected

Mass of Zn 0.032 g
Total Pressure 30.00 in Hg
Water Temperature 20.0°C

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

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The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?