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How much heat would be given off per mole of NaOH if 4.6g of NaOH dissolves to give off 755J of heat? b)How many grams of NaOH are needed to produce 88 kJ of heat? Please explain the steps to get the answer
Under what conditions will the endothermic reaction, 2 Na2O(s) 4 Na(s) + O2(g), be spontaneous?
For the microscale titration between KMnO4 and H2O2 the balanced net ionic equation is 2 MnO4-(aq) + 5 H2O2(aq) + 6 H+(aq) --> 2 Mn2+(aq) + 5 O2(g) + 8 H2O(l)
calculate the actual yield of magnesium nitrate formed from 113.9 g of magnesium and excess copper(II) nitrate.
Find the activity(not the activity coefficient) of the (C3H7)4N+ (tetrapropylammonium) ion in a solution containing 0.005 M (C3H7)4N+Br- plus 0.005 M (CH3)4N+Cl-. The ionic strength will be affected by mixing
The osmotic pressure of 0.010M solutions of a non-voliatile electrolyte solure "a" and a non-volitale non-electrolyte solute "b" are 0.605 atm and 0.235 atm respectively
Which ions were present in the original solution? Write net ionic equations for the formation of each of the precipitates observed.
Calculate the molar mass of a nonelectrolyte that lowers the freezing point of 25.00 g of water to 3.9°C when 4.27 g of the substance is dissolved in the water.
Therefore aspartame will have an isoelectric point at a pH between the pKa values of these functional groups. Find the values for these two groups of aspartic acid and calculate a predicted pI value for aspartame.
why does a salt containing a cation from a weak base and an anion from a strong acid form an acidic solution
If 3.1 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 ->CO2 + H2O, how much oxygen is required?
If 545 mL of oxygen gas is collected at 21ºC and 754 mm Hg, what is its volume at STP?
Which salt is most soluble in water? chromium (III) nitrate, silver iodide, barium phosphate, or calcium carbonate.
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