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80. What current is required to plate out 6.0 g of copper from ą copper(I1) nitrate...
How many grams of copper will be plated out by a current of 2.3 A applied for 35 minutes to a 0.50 M solution of copper (II) sulfate? A) 1.6 B) 3.2 C) 1.8 x 10-2 D) 3.6 × 10-2 E) 0.019
1. Calculate the molarity of the following solutions: a. 318 g Mg Br, in 859 ml solution b. 8.28 g Ca(C,H,O,), in 414 ml solution c. 31,1 g Al,(80.), in 766 ml solution d. 59.8 g CaCl, in 100 ml solution e. 313.5 g LICIO, in 250 ml solution | 849 Calculate the moles of solute needed to prepare each of the following: 2. LOL of a 3.0 M NaCl solution b. 0.40 L of a 1.0 M KBr solution...
How many minutes will it take to plate out 16.22 g of Al metal from a solution of A13+ using a current of 14.6 amps in an electrolytic cell? A) 53.0 B) 66.2 C) 153 D) 199 E) 11900
Problem 6. Two infinitely long wires are arranged side by side. The current I, is pointing out of the page. The current I1 is pointing into the page. The distance between the wires is d. Let the magnitude of the currents be equal. I = I) Find the direction of the total magnetic field at the following coordinates. Give the answer as a positive or negative unit vector i, j, or k.23. At (2d, 0) (A) rightward (B) up (C) out (D)...
What volume of a 6.0% solution of ethanol contains 3.0 g of ethanol? 6. What volume of a 60% solution of ethanol contain 3.0 g of ethanol? A) 5.0 mL B) 6.0 mL C) 10 ml D) 30 mlL E) 50 mlL
REPORT SUMMARY (2pts) How many grams of copper (II) nitrate would be produced from 0.80 g of copper metal reacting with excess nitric acid? (5pts) Conversion 2 When copper (II) nitrate reacts with sodium hydroxide, blue-green copper (II) hydroxide and sodium nitrate (in solution) are produced. How many grams of copper (11) hydroxide, Cu(OH)2 can be prepared from 2.4 grams of copper (II) nitrate (Cu(NO3)2) and excess sodium hydroxide? (2pts) Write the balanced chemical equation Normal : BIILU X1 X1...
3. What is the molarity of a solution that contains 17 g of HI (MW=128 g-mol-') in 0.50 L of solution? A 0.94 B 0.42 C 1.0 D 2.0 E 0.26
2. For each of the following cell notations: a. Identify the cathode and anode. b. Write the net cell equation. c. Calculate the cell potential. I) Pb(e) 1 Pb2+(ag) 11 Ni2+ (aq) 1 Ni(s) II) Pts 1 So,"caq) H(aq) 1 H2SO3(aq) 11 Ag‘aq) 1 Ago) 4. Balance the following redox reaction occurring in a basic medium. NO2 (aq) + Al(s) + NH3(g) + AlO2 (aq) 5. A student wishes to set up an electrolytic cell to plate copper onto a...
please show work 17) When 200, mL of water are added to 100. mL of 12 % KCl solution the final concentration of KCI is (Assume the volumes add.) A) 12% B) 4.0% C) 36%. D) 6.0% E) 8.0% 18) What is the molarity of a solution containing 5.0 moles of KCI in 2.0 L of solution? A) 2.5 M B) 1.0 M C) 5.0 M C) 10. M E) 2.0 M 19) What is the molarity of a solution...
A current i flows into (and, on the other side, out of) a paralle-plate capacitor. The plates are circular, spaced 0.0010 m apart, and have an area of 0.785m2. The voltage across the capacitor changes at 1.0 kV/s, causing a magnetic field to be induced in the capacitor, parallel to the plates. (a) Find the rate at which the electric field and the electric flux are changing between the plates. (b) Find the magnitude of the magnetic field between the...