52. How many moles of Pt may be deposited on the cathode when 128.7 A of...
How many grams of chromium metal will be deposited from a solution that contains Cr^3+ ions if a current of 1.01 A is applied for 40.2 minutes. Answer in______________ grams? How many grams of cobalt metal will be deposited from a solution that contains Co^2+ ions if a current of 0.517 A is applied for 40.5 minutes. Answer in_____________ grams? How many grams of cobalt metal will be deposited from a solution that contains Co^2+ ions if a current of...
Calculate a How many moles of solute is contained in 1.85 L of 0.125 M solution? mol How many moles of solute is contained in 500 mL of 0.100 M solution? mol C How many mL of 0.650 M solution contains 0.110 mol of solute? PE Submit Answer Try Another Version 10 item attempts remaini pt a pt 1 pt search
d. -3 4. How many moles of Rb+ are present in 150 mL of a 0.60 M solution of Rubidium Carbonate? a. 0.090 mol b. 0.50 mol c. 0.18 mol d. 0.25 mol
3. How many mL of H2(g) at STP are generated when a current of 1.50 amps is passed through the previous cell for 10.0 minutes? (Hint: You will need to find the moles of H, produced and then use the ideal gas law.)
C. 0 d. -3 4. How many moles of Rb* are present in 150 mL of a 0.60 M solution of Rubidium Carbonate? a. 0.090 mol b. 0.50 mol c. 0.18 mol d. 0.25 mol
7.H₂O H2 + O2 a. How many moles of oxygen are produced when 1.26 moles of H,O is reacted? (1pts) 1.26 mol H201 molo2 0.63 mol 02 12 mol H20 10.0 b. How many moles of H,0 are needed to produce 55.7 moles of hydrogen? (1pts)
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1. How many moles of electrons are represented by a total charge of 1.0 C? The charge on A) 6.2 x 10 mol B) 1.6 x 10-19 mol C) 3.5 x 105 mol D) 1.0 x 10 mol 2. The charge on an electron is 1.602 x 10"9 C. How many electrons flow when 55 pJ of an electron is 1.602 x 10-19 C. electrical energy passes through a voltage of 9 V? A) 3.4 x 10 B) 3.8...
How many moles of phosphorus trichloride may theoretically form when 2.409 g of chlorine reacts? (Use 70.90 g moll for the molar mass of chlorine.) P4(s) + 6 Cl2(g) -> 4 PC13(1) What is the limiting reagent when 0.7541 g of phosphorus reacts with 2.409 g of chlorine? P4(s) + 6 Cl2(g) - 4 PC13(0) P4 Cl2 PCI3 Calculate the theoretical yield of phosphorus trichloride (in g) when 0.7541 g of phosphorus reacts with 2.409 g of chlorine. (Use 137.3...
4) Answer the following a) How many moles of H were added to the buffers by adding 0.50 mL of 1.0 M HCl? a b) How many moles of conjugate base (A-) are present in 40 mL of the 0.10 M Buffer at pH 7.5? c) How many mol es of conjugate base (A-) are present in 40 mL of the 0.10 M Buffer at pH 6.0? d) Use the Henderson-Hasselbalch equation to predict how much the pH should change...
Please use railroad tracks for work, thank you.
1. How many faradays are transferred in an electrolytic cell when a current of 2.0 A flows for 12 hours? (1 faraday = 96,500 C) 2. A metal object is to be gold-plated by an electrolytic procedure using aqueous AuCl3 electrolyte. How much gold may be deposited in 3.0 min by a constant current of 10.0 A? 3. What mass of nickel may be electroplated by passing a constant current of 7.2...