7. an unknown metal was reacted with 20 ml of 2.0 m hcl to produce hydrogen gas that was
collected over water. assume that no air was present initially in the container used to collect the
hydrogen. using the data provided in option_ g determine the formula of the metal
chloride that is formed. show all of your work. (hint: consider the significance of
coefficients in a balanced equation. start by writing an unbalanced equation using m to
represent the metal and mci, to represent the metal chloride. then use the data given to
determine the ratio of moles of metal to moles of hydrogen and complete the balanced equation.)