Chemistry, 20.10.2021 17:30, MileenaKitana

53. A piece of zinc reacts completely with hydrochloric acid, HCl(aq), to produce an aqueous solution of
zinc chloride, ZnCl2(aq), and hydrogen gas.
a. Use the data shown below to determine the
enthalpy of reaction per mole of zinc.
AH; of HCl(aq) = -167.2 kJ/mol
AH; of ZnCl2(aq) = -488.2 kJ/mol
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
b. What mass of zinc must be used for 123 kJ of heat
to be given off?
=-
-

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 21:00, Gghbhgy4809

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

Answers: 1

continue

Chemistry, 22.06.2019 05:20, jtingley0502

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Answers: 1

continue

Chemistry, 22.06.2019 07:40, caleb19moody

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Answers: 2

continue

Chemistry, 22.06.2019 23:40, tilievaughn14

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.

Answers: 1

continue

Do you know the correct answer?

53. A piece of zinc reacts completely with hydrochloric acid, HCl(aq), to produce an aqueous solut...