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Nickel can be plated from aqueous solution according to the following half reaction. How long would...
Silver can be plated out of a solution containing Ag+ according to the half-reaction Ag+(aq)+e−→Ag(s) How much time (in minutes) does it take to plate 19 g of silver using a current of 4.8 A ? Express the time to two significant figures and include the appropriate units.
Question 11 An antique spoon is to be silver-plated. How long will it take to plate 21.4 g of Ag (atomic mass=107.9 g/mol) from a solution of AgNO3 using a current of 10.0 amp? a. 63.8 min b. 31.9 min O c. 161 min Od 1.15 x 105 min O e. 80.4 min Moving to another question will save this response. Question 12 A 25.0 ml sample of 0.20 M Formic Acid (HCO2H, aq) is titrated with 0.10 M KOH(aq)....
1) The value of E˚ for the following reaction is 1.10 V. What is the value of Ecell when the concentration of Ag+ is 0.12 M and the concentration of Cr3+ is 0.40 M? Cr (s) + 3Ag+ (aq) à 3Ag (s) + Cr3+ (aq) E˚ = 1.54 V 2) How long will it take to plate out 2.19 g of chromium metal (52.0 g/mol) from a solution of CrBr3, using a current of 35.2 amps?
5. (2 pts) Balance each of the following equations according to the half-reaction method: (a) NO3-(aq)- HNO2(aq) (in acidic solution) (b) MnO2(s)MnO4-(aq) (in basic solution) 6. (2 pts) A pint of premium ice cream can contain 1100 Calories. What mass of fat. in grams and pounds, must be produced in the body to store an extra 1.1 x 10 Calories if the average number of Calories for fat is 9.1 Calories/g? 7. (2 pts) The following sequence of reactions occurs...
Question 1 According to the following reaction, what mass of silver nitrate would be required to react with 0.500 grams of potassium chloride? AgNO3 (aq) + KCl (aq) --> AgCl (s) + KNO3 (aq) options 2.68 g 0.500 g 85.0 g 170 g 1.14 g Question 2 Consider the reaction: Na2CO3 (aq)+ 2 HCl (aq) --> 2 NaCl (aq) + CO2 (g) + H2O (l) If 43.41 g of sodium carbonate react completely, how many grams of HCl will be...
1. If the cell voltage is 0.473 V what is the pH of the cathode compartment for the following cell where E° (Zn2+Zn) = -0.7618 V? Zn(s)[Zn2+(aq, 1.00 M)|| H*(aq, ? M)|H2(g. 1 atm)Pt(s) Dobe r to bola piwostinavia 2. Gold can be plated out of a solution containing Au according to the half-reaction Au (aq) + 3 e- - Au(s) v o n 18 How long will it take to plate out 10.0 g Au(s) (Mau = 197.0 g/mol)...
Please help with solving Question 1 (A-C) Thank you! Unless otherwise specified in the problem, you may assume that all solutions are at 25°C. 1. 50.0 mL of a pH 6.00 carbonic acid buffer is titrated with 0.2857 M NaOH, requiring 17.47 mL to reach the second equivalence point. a. Calculate the molarity of carbonic acid and bicarbonate in the original buffer. Carbonic acid: Bicarbonate: b. Calculate the pH of the solution after a total of 100.0 mL of 0.2857...