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Explain if a solution containing .10 M Cl- , Br- , I- and (CrO4)2+ is treated with Ag+, in what order will the anions precipitate?
Calculate the pH of a buffer solution containing 0.65 M CH3COONa. Calculate the pH after 0.0010 mol HCl is added to 450.0mL of buffer.
If 72.4 kJ of heat is supplied to a 852 g block of metal, the temperature of the metal increases by 9.6°C. Calculate the specific heat capacity of the metal in J/g·°C.
When 95% ethanol was used as the buffer only the mixture and methylene blue travelled up the plate, but when 65% ethanol was used as the buffer all 3 of them travlled up the plate. why did sodium fluorescein not move with 95% ethanol
if the thermometer is position too high in the distillation adapter how would this affect your boiling point
its ground state absorbs 2.50 times as much energy as the minimum required for it to escape from the atom. Calculate the deBroglie wavelength of the emitted electron
what is the enthalpy change corresponding to the melting of 2.5 moles of H2O? what is the system? What is the surrounding? In what direction does the heat flow? Is the process endothermic or exothermic?
What component of air will bring about this reaction and what is its approximate concentration in air? If you had a stoppered flask with basic luminol and then opened it to the air
the balloon reaches an altitude of 100m, where the pressure was 658 mmHg and the temperature was -8c. what was the volume in liters of the ballon at these conditions?
4HCl(aq)+1MnO2(s)->1MnCl2(aq)+2H2O(g)+1Cl2(g) When 1.22 mole of HCl reacts with excess MnO2, how many moles of Cl2 form. and How many grams of Cl2 form
Tap water contains calcium ions. Why dont we use tap water tp dissolve the oxalic acid? Show a chemical equation to ilustate your answer.
Which of the following isomeric chlorides will undergo Sn2 substitution most readily? Why? a. 4-chloro-1-butene b. 1-chloro-1butene (cis or trans) c. 1-chloro-2-butene (cis or trans) d. 2-chloro-1-butene
A buffer solution consists of 1.5 mol/L of sodium acetate and 1.5 mol/L of acetic acid. The Ka of acetic acid is 1.8x10^-5. What's the pH of the buffer
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