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Problem: Suppose it took 11.5 mL of 0.112 M NaOH solution to neutralize the acid solution and that you used 0.592 g of green crystals to prepare the original 50.0 mL solution (of which only 10.00 mL is analyzed for Co content at a time).
Calculate the mass of cobalt in the sample, the percent cobalt and the percent error.
What is the enthalpy of reaction per mole of oxygen bound. The heat capacity of the solution may be assumed to be 4.18J/k cm3
A 5.00-mL sample of a sulfuric acid solution of unknown concentration is titrated with a 0.1401 M Sodium Hydroxide solution. A volume of 5.99 mL of the base was required to reach the endpoint. What is the concentration of the unknown acid solution
Denoting the initial, unknown concentration CD2+, write an equation to calculate the final concentration , CD2+ considering the dilution factor, units are ppm.
How many litersof hydrogen gas will be produced by the decomposition of 90 L of water
The analysis showed 92% CO2, 2.2% NO, 1.7%SO2 and 4.1%H2O by mass. what is the partial pressure exerted by nitric oxide (NO)
How many moles of oxygen are needed for the complete combustion of 9.88* 10^21 molecules of hexane?
Problem- 2NaOH(s)+CO2(g)?Na2CO3(s)+H2O(l). Which reagent is the limiting reactant when 2.08mol NaOH and 1.10mol CO2 are allowed to react? 1) How many moles of Na2CO3 can be produced
What is the pH of a solution in which 323 mL of HCl(g), measured at 26.8 degrees Celsius and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
For 100 g mol of a gas mixture of 75 mol % CH4 and 25% H2, calculate the total heat of combustion of the mixture at 298 K and 101.32 kPa, assuming that combustion is complete.
a 0.21 m3 drum contains 100 l of a mixture of several degreasing solvents in water. the concentration of
What would be the partial pressures of all the species if NO and Br2, both at an initial pressure of 0.30 atm, were allowed to come to equilibrium at this temperature
A solution containing equivalent masses of glycerol (C3H8O3) as well as water has a density of 1.20 g/mL. Compute (a), the molality of glycerol, (b), the mole fraction of glycerol, and (c), and the molarity of glycerol in the solution.
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