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Problem- Calculate the ionic strength of the solution you prepared by dissolving your measured amount of pure sodium carbonate into 25.00 mL of deionized water. Assume that Na+ and CO32- are the only ions that contribute to the ionic strength. What additional ions are present in this solution? Is it reasonable to assume that these other ions do not contribute significantly to the ionic strength? Why? (.1008 g sodium carbonate used)
I need help for above question. Show each steps for the above problem.
The compound KB5O8·X H2O was analyzed and found to contain 24.6% of water. If the formula weight of this compound is 293.15 g/mol, what is the number of water molecules (X) in the formula?
What is the unknown stubstance that is insoluable in water, soluable in cyclohexane and alcohol and has a boiling point of 58 C at 670 mm hg?
The atomic mass of chlorine is listened as 35.454 amu on the periodic table. It has two naturally occuring isotopes CL 35 and Cl 37. What are the approximate percentages.
The activation energy for a particular reaction is Ea = 14.20 kJ. What percentage of the molecules are at or above the activation energy at 500.0 K
Formulate a reaction mechanism to show how, with excess acetic anhydride ,2-methyl benzisoxazinone might be formed.(Hint: acetylation of the amino group should occur first). How many moles of acetic anhydride are consumed in this reaction?
A Standard Reference Material is certified to contain 94.6 ppm of an organic contaminant in soil. Your analysis gives values of 98.6, 98.4, 97.2, 94.6, and 96.2 ppm.
N2+3H2 yields 2NH3 at STP How many grams of nitrogen are needed to react with 1.4L of hydroden
what is the percent yield of a reaction in which 248 g phosphorus trichloride reacts with excess water to form 126 g
Determine the equilibrium constant for the system 2A 3B. At equilibrium, the concentrations are shown here: [A] = 9.43 x 10-2 M, [B] = 1.41 x
explain Why this separation occur and which solvent will be on top - the temperature of twenty degree Celsius. When hexane is added with H 2 O, there is a separation
A 14.824g rock is placed in a graduated cylinder containing 45.8mL of water. Calculate the density of the rock if the water level rises to 55.2mL.
The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 27.0 g of C2Cl3F3 from a liquid at 12.00°C to a gas at 68.00°C.
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