The water in a 150-ml flask is poured into a beaker that contains 600 ml of ethyl alcohol. which substance is the solvent in this mixture? water because it is a very polar compound ethyl alcohol because it has a lower density than water ethyl alcohol because it has a much larger volume than water water because it has dissolved in ethyl alcohol

The pressure in a fluid is affected by which characteristics of that fluid

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

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.)