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A 30.0mL sample fo an unknown HClO4 solution requires 41.3 mL of 0.108M NaOH for complete neutralization.
What was the concentration of the unknown HClO4 solution? The neutralization reaction is: HClO4(aq)+NaOH(aq)==>H2O(l)+NaClO4(aq)
The average radius of a molecule of lysozyme, an enzyme in tears is 1430pm,what is the radius in nanometers.
C6H5NH3Cl is a cation chloride salt with acid. If 37.1 g of C6H5NH3Cl are dissolved in water to prepare a 150 mL solution, which is the initial molarity of the cation?
The corresponding densities of liquid water and water vapor are 0.958 kg/L and 0.000598 kg/L, respectively. Calculate the change of pressure for a one degree change in temperature.
potassium hydrogen phthalate, a monoprotic acid with a molecular weight of 132 g/mol
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for this reaction.
How many moles of NaOH should be added to a solution containing 0.440 moles of formic acid, HCOOH, to prepare a formic acid/formate
When 4.21 g of a nonelectrolyte solute is dissolved in 165 mL of water at 26 °C, the resulting solution exerts an osmotic pressure of 909 torr
Complete and balance the equation for this reaction in acidic solution. Phases are optional.
It requires 251 J to melt 2.22 g of sodium metal at its normal melting point of 98°C. Calculate the molar heat of fusion of sodium.
If it takes 52 J of energy to warm 7.40g of water by 17°C, how much energy would be needed to warm 7.40g of water by 55 °C
The CO 2 produced in one round of the citric acid cycle does not originate in the acetyl carbons that enter that round. Create a diagram of the TCA cycle to illustrate the answers to questions 1a and 1b.
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
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