Write a problem where the pressure in a covered tank is 3 atmospheres over the fluid, and w pressure in a tank is 0.5 atmospheres over the fluid, with an open manometer. use a manometer and diagram such as that shown in figure 2.2-5(a). at the bottom of the page list 3 features of a chosen manometer fluid. specify physical properties, sizes and heights so that the above solutions make sense.

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)