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A student weighed 0.4521 g of sodium oxalate and dissolved in 50 mL of distilled water and 10 mL of 4.0M H2SO4. The solution was titrated with 58 mL of KMnO4, what was the concentration of KMnO4.5C2O4^2-(aq)+2MnO-4(aq)+16H+(aq)-> 10CO2(g)+2Mn2^+(aq)+8H2O(l)
a 200 gram sample of a large biomolecule was dissolved in 15 grams of carbon tetrachloride. the boiling point of this solution was determined to be 77.85 degees celcius. calculate the molar mass of the biomolecule.
allowed to expand adiabatically against constant Pext = 10 atm. Compute the final T, ?U, and ?H for this process. Use Cv = 20.8 J/mol*K and assume the gas is ideal.
At 20 degrees Celcius and 1 atm (pressure), gold (Au) has a density of 19.32 g/cm cubed. What would be the volume of 2.510 kg of gold at the same temperature and pressure
Calculate the number of grams of alcohol present in 1.00 L of 69 proof gin. The density of ethanol is 0.798 g/mL.
Calculate the pH of a solution made from dissolving 1.00 moles of benzoic acid with 1.00 moles of sodium benzoate in enough water to make 750ml of solution.
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount available from pure gasoline
What mass of CaCl2, when dissolved in 100.00g of water, gives an expected freezing point of -5.0 degrees celcius; CaCl2 is ionic?
What is defined as the number of atoms surrounding an atom in a crystal lattice and indicate how tightly the atoms
A student combusts 504.96 grams of ethene gas, C2H4. How many liters of CO2 (g) are produced at a pressure of 0.993 atm and a temperature of 295 K? C2H4 (g) + 3 O2 (g) ->2 CO2 (g) + 2 H2O (g)
What mass of ethanol, CH3CH2OH, should be dissolved in 450. g of water to obtain a freezing point of 4.5°C?
Which indicator would be the best to use when titrating ammonia with nitric acid? Kb of NH3 is 1.8 x 10-5.
Calculate the mass of NaHCO3 that was used up in the reaction for each beaker. The molecular weight of NaHCO3 is 84.007 g/mole.
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