Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas according to the following equation: Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g)

If 0.0524 grams of zinc react with an excess of HCl acid, what theoretical volume of hydrogen gas can be produced if the temperature is 25oC and the barometric pressure is 620 mm Hg? (molar mass of Zn is 65.409 g/mol)

[x] mL

Turbo the snail moves across the ground at a pace of 12 feet per day. if the garden is 48 feet away, how many days will it take for the snail to get there?

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.)

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules