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50.0 mL of 1.0 M HCl at 25.0 oC were mixed with 50.0 mL of 1.0 M NaOH also at 25.0 oC in a styrofoam cup calorimeter. After the mixing process, the thermometer reading was at 31.9 oC. Calculate the energy involved in the reaction and the enthalpy per moles of hydrogen ions used.
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.289 grams of iron and 21.0 mL of 0.433M copper(II) sulfate react to form as much product as possible.
You burn 0.0956 g of the compound and isolate 0.1356 g of CO2 and 0.0833 g of H2O. What is the empirical formula of the compound.
What is the pH of a 0.25 M NaOH solution? A Rolaids tablet contains calcium carbonate, which neutralizes stomach acid. If 44.55 mL of 0.488 M hydrochloric acid is required to neutralize one tablet, how many milligrams of calcium carbonate are in a ..
Determine the amount of heat energy is needed to raise the temperature of 0.362 kilograms of Cu from 23. Degree Celsius to 60 degree Celsius?
A pound of coffee beans yields 30 cups of coffee (4 cups = 1 q). How many milliliters of coffee can be obtained from 1 g of coffee beans.
A 322 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 635 mmHg. Calculate the moles of Ar present.
Find out the eq molar concentration of SCN- in the system.( Kc=[FeNCS2+]/[Fe3+][SCN-] =271.5)
when 9.00 g of Al react with an excess of H3PO4, 30.0 g of AlPO4 are prodecued. What is the percentage yield of this reaction?
Calculate the change in temperature for 4.50 g of CaCl2 dissolved in 90.0 mL of H20. Assume that the calorimeter absorbs no heat (ie. Ccal=0)
Compute the pH of a solution made by mixing eighty grams of NaCH3COO, to 39 grams of CH3COOH, and adding in H2O to produce 500. mL of solution.
Phenol and straight chain alcohol, The compound C6H5OH is a phelol, and C6H13OH is a straight chain alcohol.
B2H6 + 3O2= B2O3+3H2O ; delta H=-2035 KJ how much heat is released when a mixture of 7.35 g B2H6 and 2.60 g O2 is burned?
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