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How many grams of nickel would be electroplated by passing a constant current of 7.20 amperes through a solution of NiSO4 for 90.0 minutes? (Ni 58.69 g/mol)
Draw two conjugated dienes, and two nonconjugated dienes, each with the formula C7H12 and the base name hexane. Provide the systematic name for each diene.
A certain reaction has Ho = 29.80 kJ and So = 20.80 J/K. (a) Is this reaction exothermic, endothermic or isothermic (neither)? This reaction is . (b) Does this reaction lead to a decrease, an increase, or no change in the degree of disorder in the..
a sample of nitrogen in a 4.5l container at a temperature of 27 degrees c exerts a pressure of 4.1 atm. calculate the
K2Cr2O7 was used to titrate a sample known to contain a mixture of sodium sulfate (Na2C2O4) and sodium oxalate (K2C2O4). The dichromate does not react with sodium sulfate.
Determine the geometry or shape of a MgH2 molecule. Check those statements which are correct. Help: VSEPR Choose at least one answer. a. There are 4 valence electrons. b. There are 8 valence electrons.
A buffer is prepared by dissolving HONH_2 and HONH_3NO_3 in some water. Write equation to show how this buffer neutralizes added H+ and OH-
The pH of 0.5 M HF is 1.88. Calculate the difference in pH when 6.06 g of NaF is added to 205.7 mL of this solution. Ignore any changes in volume. The Ka value for HF is 3.5 x 10-4.
question a solution is prepared by adding 1.75 mg of an unknown protein to enough water to make a 13.5 ml solution. the
A gaseous fuel mixture stored at 752mmHg as well as 298K contains only methane (CH4) and propane (C3H8). While 12.6 L of this fuel mixture is burned it produces 762kJ of heat.
what volume of a concentrated solution which is 36.0 by mass and has a density of 1.179 should be used to make 5.00 of
Suppose 50.0 mL of 0.250 M CoCl2 solution is added to 25.0 mL of 0.350 M NiCl2 solution. Calculate the concentration, in moles per liter, of each of the ions present after mixing. Assume that the volumes are additive.
The resulting W3 was transferred to 500.0 mL of 1.00 M HCl. A 100.00 mL aliquot of the HCl solution required 12.26 mL of 0.08855 M potassium permanganate (KMnO4) to reach the purple endpoint.
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