Chemistry, 27.07.2020 01:01 willwhitlock803
A voltaic cell employs the following redox reaction: Sn2+(aq) + Mn(s) ---> Sn(s) + Mn2+(aq) Calculate the cell potential, in volts, at 25oC under standard conditions.
Answers: 3
Chemistry, 22.06.2019 11:40
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.)
Answers: 1
Chemistry, 22.06.2019 16:00
The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride
Answers: 1
Chemistry, 22.06.2019 18:00
The fact that the total amount of energy in a system remains constant is a(n)
Answers: 1
A voltaic cell employs the following redox reaction: Sn2+(aq) + Mn(s) ---> Sn(s) + Mn2+(aq) Calcu...
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