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A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out 76. mg of oxalic acid H2C2O4, a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in 250. mLof distilled water. The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 123.5 mL of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide solution. Round your answer to 2 significant digits.
calculate the concentration of nonelectrolyte solute particlesin human blood if the osmotic pressure is 7.53 atm at37oc
You dissolve 650.0 g of sugar (C12H22O11) in 726 mL of water. The density of wat is 1.00 g/mL.
Theoretical Computer Science: Q: For languages A and B, let the perfect shuffle of A and B be the language {w | w = a1b1....akbk, where a1...ak ∈ A and =b1...bk ∈ B, each ai, bi ∈ Σ }
what is the theoretical yield for carbon dioxide. if 1.44 g of carbon dioxide is isolated from this reaction, what is the percent yield for carbon dioxide
In this experiment you utilized yellow colorimetric guide to establish the end of the reaction. Would you wait for to get the same value of the activiation energy if red was chosen rather than yellow
a styrofoam cup holding 116 g of hot water at 1.00 102degc cools to room temperature 16.1degc. what is the change in
Methane undergoes the combustion, as shown in the chemical equation below. Using bond energies, estimate the energy change for this reaction. Please use the correct bond energy for the CO bond in CO2
Problem- 100 ml of buffer is made using 0.041 moles of HC2H3O2 (acetic acid) and 0.038 moles of NaC2H3O2 (sodium acetate). The Ka of acetic acid is 1.8 x 10-5 using the above equation, what is the pH of this solution
which one of the following compounds is a stereoisomer of cis-12-dimethylcyclopentane? a methylcyclohexane b
Gas Chromotography/ Orange oil experiment. Limonene (L) and internal Standard Anisole (A) Were used and needed to find the Wt% of L in a given orange oil sample.
A BOD test is to be run on a sample of wastewater that has a five-day BOD of 230 mg/L. If the initial DO of a mix of distilled water and wastewater is 8.0 mg/L
The titration required 10.51 mL of the KOH solution to reach an end point. What was the percentage by mass of K2SO3 in the original mixture of KNO3 and K2SO3?
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