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In titrating a 25.00 mL of a 0.100 M HCl solution with a NaOH solution of unknown concentration, 10.25 mL of the base was needed to reach the end point. Calculate the concentration of the NaOH solution. The reaction between HCl and NaOH is as follows:HCl + NaOH -> NaCL + H20
a fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. each barrel contains 42 gallons. if the oil film on the ocean is 2.5 x 10^2nm thick , how many square meters will the oil slick cover?
Determine the osmotic pressure of a solution that contains 0.010 g of a hydrocarbon solute (molar mass = 340 g/mol) dissolved in benzene to make a 350-mL solution. The temperature is 20.0°C.
It gave a mixture of MgO and ZnO that had a mass of 1.409g. What mass of An was there in the original mixture?
When 4.70 g of a nonelectrolyte solute is dissolved in 915 mL of water at 21 degrees C, resulting solution exerts an osmotic pressure of 839 torr. What is the molar concentration of the solution?
How many moles of Na and Cl2 are needed to make 7.3 moles of NaCl? Use the balanced equation 2Na + Cl2 --> 2NaCl
Construct a cel from Ni(s), Ni^2+(l), Cd(s) and Cd^2+(l) a. What would be the anode and what would be the cathode? b. indicate the half reactions happening at each the anode and the cathode
Why is lactose much more soluble in water than in ethanol?
An electron is confined to a one-dimensional box of length L. It falls from the second energy level to the ground state, and releases a photon with a wavelength of 322 nm. What is the length of the box?
Write a detailed sheet/ flow chart for the isolation and purification of 1-bromobutane. Designate how each minor-product is removed form the major product and which layer holds the product in each experimental step performed.
What is the ee?, The optical rotation of a compound is -165. What is the ee for a solution mixture with a measured rotation of -50?
When a Group III unknown was treated with an aqueous ammonia/ammonium chloride and ammonium carbonate, a white precipitate was produced.
What velocity would an electron (9.11x10^-31kg ) need for its de Broglie wavelength to be that of red light (745 nm)?
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