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What are some sources of errors that are associated with standardizing a solution/titration, how can these errors be prevented
calculate the theoretical mass of nylon 6,10, in order to find out the percent yield. - 1mL of sebacyl chloride was used (density = 1.121g/mL) and 2.3 grams of 1,6 hexanediamide
What is the total vapor pressure 4 at 20° C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole fraction toluene, C6H5CH3? Assume that Raoult's law holds for each component of the solution.
how many grams of calcium carbonate , CaCO3, do you need in an antacid tablet to neutralize 20 ml of stomach acid ?
Determine the partial pressure and the total pressure using Dalton's law of partial pressures - Determine the total pressure of the mixture.
A 1.43-L flask is filled with propane gas (C3H8), at 1.00 atm and -23.0°C. What is the mass of the propane in the flask?
What main type of intermolecular attraction would you expect for cl2c0?
A 1.3 g sample of C3H6O is burned completely in excess oxygen to yield CO2 (g) and H2O (l) at 25 C, releasing 41.4 kJ of energy. What is the enthalpy of formation of C3H6O?
a large containerized planting that contains 79kg of soil. An analysis shows that you need to neutral 3.27 meq/100gof acidity. How much of finely ground pure CaCO3
A gas was enclosed in a rigid-walled container. The initial temperature and pressure were 52°C and 0.55 atm, respectively. If the final pressure were 2.41 atm.
Copper has a specific heat of 0.092 cal/(g·°C). When 52.7 cal of heat is added to a piece of copper, the temperature increases from 22.4°C to 38.6°C. What is the mass of the piece of copper
Calculate the change in entropy of a system (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
A solution is prepared by mixing 50.0 mL of 0.11 M Pb(NO3)2 with 50.0 mL of 1.3 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6* 10-5.
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