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Calculate the molarity of a solution made by dissolving 0.650 Na2SO4 grams of in enough water to form exactly 950 mL of solution.
The density of liquid oxygen at its boiling point is 1.14 {kg/L} , and its heat of vaporization is 213 {kJ/kg} . How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized?
Calculate the millimoles of copper (II) sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.
You are asked to prepare a buffer with a pH of 9.8. Calculate the volumes of .1 M solutions of NH4Cl and NH3 needed to produce 200mL of the buffer
Propane, C3H8, when used as a fuel, reacts with oxygen gas to produce carbon dioxide and water. What mass of oxygen will be required to react with exactly 14.05 grams of propane?
What type of reaction occurs prior to the substitution reaction to form a new good leaving group? And please explain why? a. nothing b. an acid base reaction
Find what is the initial concentration of the chlorine before dilution - unknown concentrated chlorine
what mass of CH3CO2H is required to prepare 100.00ml of a 0.48M acetic acid solution?
A mixture of three gases has a total pressure at 293K of 1380 mmHg. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar?
The standard molar enthalpy of vaporization for water is 40.79 kJ/mol. What mass of steam is required to release 500. kJ of energy upon condensation? (Molar mass of water is 18.02 g/mol.)
What volume of 0.955 M HCl, in milliliters, is required to titrate 2.152 g of Na2CO3 to the equivalence point?Na2CO3(aq) + 2HCl(aq) ---> H2O(l) + CO2(g) + 2NaCl(aq)
What is the Volume of 0.75 mol of Benzene (C6H6) at 20.7 degrees C. The density of Benzene is 0.879 g/mL
The excess I2(aq) left over from the above reaction was titrated with 11.37 mL of 0.0105 M thiosulfate (S2O32-) as follows: I2(aq) + 2S2O32-(aq) → 2I1-(aq) + S4O62-(aq)
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