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What volumes of 0.53 M HNO2 and 0.59 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.41?
What is the [H3O+] in a solution that has a pOH of 2.29? Use E notation and 3 significant figures. Is the solution 1.95X10^12? show me how you got it as well
Using terms in the Hartree-Fock energy expression, explain why the lowest-energy triplet state of the He atom is higher in energy than the singlet state.
A weak monoprotic acid is titrated with NaOH, and the following data are recorded. Calculate the molar mass of the weak acid. original volume of acid solution = 50.00 mL mass of acid (a solid) = 0.3459 g
If a 0.10 M solution of an acid has a pH of 4.5, what would be the predicted pH of a 0.10 M solution of the conjugate and why
Complete and balance the equation for this reaction in acidic solution. Phases are optional
What is the half-life of bismuth-210 if 11.7 days are required for the activity of a sample of bismuth-210 to fall to 19.8 percent of its original value
At 25 degrees Celsius the rate constant for the first-order decomposition of a pesticide solution is 6.40 x 10^-3 min^-1 If the starting concentrate of pesticide is 0.0314M what concentration will remain after one hour at 25degreesC
a gold bar weighing 33.5g and having an initial temperature of 25.0 degrees celsius absorbs 5000 joules of heat. what
Discuss the phase changes that occur in the liquid solid and liquid vapor boundary. Describe how the locations of phase boundaries are obtained. Discuss any assumptions used in the Clasius Clapeyron equation.
The active ingredient in some antiperspirants is aluminum chlorohydrate, Al2(OH)5Cl. Analysis of a 2.000-g sample of antiperspirant yields 0.334 g of aluminum. What percent (by mass) of aluminum chlorohydrate is present in the antiperspirant?
Methanol (CH3OH) is produced commercially by the catalyzed reaction of carbon monoxide and hydrogen: CO(g) + 2H2 (g) (equilibrium) CH3OH(g).
explain how to determine the instantaneous rate of formation of i3- at exactly 20 minutes. draw on the graph above as part of your. explanation.
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