Chemistry, 17.12.2019 03:31 kerstynsharp08
For a galvanic cell that uses the following two half-reactions, cr2o72-(aq) + 14 h+(aq) + 6 e- → 2 cr3+(aq) + 7 h2o(l) pb(s) → pb2+(aq) + 2 ehow many moles of pb(s) are oxidized by three mol es of cr2o72-?
a) 3
b) 6
c) 9
d) 18
Answers: 3
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In what environment would mineral formation caused by high pressures and high temperatures most likely occur?
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16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.
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Chemistry, 22.06.2019 18:00
Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]
Answers: 1
For a galvanic cell that uses the following two half-reactions, cr2o72-(aq) + 14 h+(aq) + 6 e- → 2 c...
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