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50.0mL of a solution with calcium oxalate required 1.76mL of 0.00101M premanganate to titrate it. What is the Ksp value for calcium oxalate?
How would the reading on a barometer change if you were to take one on a trip from los angeles to Lake Tahoe, which is at a much higher altitude?
Why was the dichloromethane layer washed with sodium bicarbonatein the procedure for the preparation of camphor?
What would be the effect on the calculated molarity of the NaOH solution if the tip of the buret were not filled before the titration? In other words, air was in the tip of the buret.
When 54.6 g calcium and 32.1 g nitrogen gas undergo a reaction that has a yield of 94.0%, what mass of calcium nitride forms?
A 5.58 g sample ofaluminum pellets (specific heat capacity = 0.89 J°C-1 g-1) and a 10.00 gsample of iron pellets (specific heat capacity = 0.45 J°C-1g-1) are heated to100.0°C. The mix
Calculate the cell potential, the equilibrium constant, and the free energy change for: Ba(s) + Mn2+(aq)(1M)=bA2+(aq)(1M)+Mn(s) given the following E values:Ba2+ +2e=Ba(s) E=-290V and Mn2+(aq)+2e=Mn
What would be the value of the activation energy for a reaction whose rate doubles when the temperature is increased from 25-35 degrees C?
FeS2 (FW = 120) reacts with oxygen to fromFe2O3 (FW = 160) and SO2 (FW =64). What mass of oxygen is required to convert 40 g ofFeS2 into Fe2O3?
If 25.0 Ml of 2.50 M CuSo4 is diluted with water to a final volume of 450 mL, what is the molarity of solute in the resulting solution?
50mL, 20.0°C of water in the coffee-cup calorimeter. After adding 50mL at 98°C of water to the calorimeter, the temperature have changed to 58°C.
The atomic mass of radium (Ra, a new radioactive element) was measured by Marie Curie as a part of her Ph.D. research (Radioactive substances, 1903).
Enough nitrogen must be generated in the bag to create a total pressure of 3.00 atm, which then drops as the bag slowly deflates.
A solution of diethylamine has a hydroxide ion concentration of 0.012 M. What is the concentration of H + ? I believe diethylamine is (CH3CH2)2NH.
A volume of 5.0 L of polluted air at 18.0 degrees celsius and 747mmHg is passed through lime water [an aqueous suspension ofCa(OH)2], so that all the carbon dioxide present is precipitated as CaCO3.
Ethyl alcohol, C2H5OH, can be made by the fermentation of glucose,C6H12O6, as indicated by the equation: C6H12O6(aq) ---> 2C2H5OH(aq) + 2CO2(g)
100 ml of an acid solution and 100 ml of a base solution were combined in a calorimeter. A temperature change of 7.5 degrees c was measured. the density of the final solution was measured to be 1.04
A 6.0-g sample of [Ni(H2O)6]Cl2 is dissolved in aqueous solution. If an excess of ethylenediamine (en) is added to the solution, solid [Ni(en)3]Cl2. H2O forms. What is the theoretical yield of pr
In a rocket motor fueled with butane, C4H10,how many kilograms of liquid oxygen should be provided with each kilogram of butane to provide for complete combustion?
In a lab when I mixed 5mL of water with 5mL of ethanol, the temperature rose to 26.5 celcius, and when I mixed 5mL of waterwith 5mL of glycerin, the temperature also rose to 26.5 celcius.
Lysozyme is an enzyme that breaks down bacterial cell walls. It isfound in tears and egg whites and elsewhere. A solution containing 0.150 g of lysozyme in 210 mL of water solution has an osmotic pr
Calculate the mole fraction of water in this solution, assumingthat the KI is completely dissociated. Predict the vapor pressure of water over this solution at25°C, assuming complete dissociation
Calculate the molar solubility (S or x) of copper(2) sulfide in 1.2M NH3(aq). Provide the formula of the complex and a balanced equation for its formation.
A certain chemical equation has three reactants. According to experiment, it is first order with respect to one of the reactantsand second order with respect to each of the other 2 reactants.
The pH an acid solution is 5.45. Calculate the Kafor the monoprotic acid. The initial acid concentration is0.010M. What is the original molarity of a solution of ammonia whose pH is 11.02?