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If an acid base reaction produces a solution with a pH of 7 at its equivalence point, why does an indicator solution that changes color at either a pH of 5 of 9 work just as well as one that changes at a pH of 7
an ice cube tray holds 455 g water. if the water initially has a temperature of 33degc how many kilojoules of heat must
you perform combustion analysis on 255 mg of a molecule that contains only c h and o and you find that 561 mg co2 is
How many milliliters of 6 M HNO3 would you add to 300 mL of the buffers solution to change the pH from 5.09 to 5.03?
a given mass of neon gas has a volume of 25.0 liters at a pressure of .75 atm. if the pressure is changed to 300.0 torr and the temperature remains constant , what will the volume of neon be
3.00×10-3 mol of HBr are dissolved in water to make 18.0 L of solution. What is the concentration of hydroxide ions, [OH^-], in this solution?
Explain the factors that lead to the third mode being such a poor group frequency. Predict the location in the spectrum of the third fundamental.
If an aqueous solution (solvent = water) is 0.5 molal in NaClO, what is the mole fraction of NaClO that is present? Hint: assume you have 1.00 kg of total solvent in your sample.
At a particular temperature the equilibrium constant for the reaction: H2(g) + F2(g) ? 2HF(g) is K = 36.0. A reaction mixture in a 10.00-L flask contains 0.42 moles each of hydrogen and fluorine gases plus 0.15 moles of HF.
Determine the pH of a 0.075 M aqueous solution of magnesium fluoride. For hydrofluoris acid the Ka is 7.0 x 10^-2.
if a 210 mg piece of gold density19.32 bcm3 is hammered into a sheep measuring 2.310 ft. what is the average thickness
find out that how many mL of this suspension must be given to an infant with 21lb weight if the recommended dose =10 mg/kg body weight?
how many grams of ice at 0 degrees celcius and 101.3 kpa could be melted by the addition of 0.400 kj of
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