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Explain what is the pH of the solution when 18.30 mL of 0.137 M trisodium hemimellitalate (trisodium benzene 1,2,3, tricarobxylate) is mixed with 25.00 mL of 0.274 M HNO3 to two d.p?
Calculate the freezing point of an aqueous solution formed by dissolving 4.22 g of KCl in 25.00 mL of water. Kf for water is -1.86 degrees C/m. Assume the density of water
What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2?
An iron bar of mass 885 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
What Celsius temperature, T2, is required to change the volume of the gas sample in Part A (T1 = 41celsius, V1= 1770 L) to a volume of 3540 L ? Assume no change in pressure or the amount of gas in the balloon.
A galvanic cell is constructed using the standard half cells Al3(aq)/Al(s) and Cl2(g)/cl (aq). ( E red(AL3+/Al) = -1.66 V= and E red(CI2/CI-) = 1.358 V) A). Write equation for the reactions at the anode and cathode. B). Write balanced equation for..
an unknown solution contains only two absorbing species thymol blue and methylthymol blue. this sample had absorbance
the total elute from the column was diluted to 250 mL and a 50 mL aliquot was titrated with 11.35 mL of 0.10359 M sodium hydroxide. Calculate the percentage of ammonium ion in the sample.
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. What is the pH of this buffer
The addition of chlorine gas to magnesium bromide will it cause a reaction and if so what will the product be
What is the product in a base catalyzed aldol condensation reaction between: 2 mmols acetone and 8 mmols benzaldehyde? 2 mmols acetone and 8 mmols 4-methylbenzaldehyde
a sample of HCI is placed in a 256ml flask where it exerts a force of 67.5 mmHg. What is the pressure of the gas if it is transfered to a 135mL flask?
Will a precipitate of magnesium flouride form when 200.0 milliliter of 1.9x10^-3mol/Litre MgClsubnumber2 solution is added to 300.0 milliliter of 1.4x10^-2mol/Litre NaFsolution?
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