What mass of the reagent should be added
A 260.0 mL buffer solution initially contains2.5×10-2 Mof HCHO2 and2.5×10-2 M of NaCHO2. Inorder to adjust the buffer pH to 4.20, you should add NaOH to the buffer mixture. What mass of the reagent should be added?
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In your house (elevation 950ft above sea level) you have a barometer that registers inches of mercury. On an average day in january, the pressure was 0.966 bar on 700 ft elevation. what is the correct reading for your barometer?
find the minimum smples size needed, using a prior study that found that 42% of the respondents said they have high speed internet access.
Does participation in company decisions have an effect on productivity? Use ? = 0.01. Please show me the steps to work with problem and what hypotheses test do you use to solve.
You want to make an acetic acid/acetate buffer, pH 5.6, with avolume of 250 mL, and a final concentration of ([AcOH] +[AcO-]) = 0.1 M. You may only use acetic acid and sodium acetate (no strong acid or base).
After posting the flags at all such sites, she obtains a random sample of 25 golfers whose mean was 81 with s = 5.73. Do the flags improve the golf scores? Use ?=0.05. Please show all 5 steps of the traditional method in the answer.
As we have noted in previous chapters, even a very small effect can be significant if the if the sample is large enough. For each of the following, determine how large a sample is necessary for the correlation to be significant. Assume a two-taile
Based on the above chemical reaction the activation energy wasd etermined to be 80.8 kJ/mol and the rate constant was determinedto be 6.9x10^ -3 at 40 degrees Celcius.
Explain why the pure solvent shows a level horizontal curve as solidification occurs, but the curve for the solution slopes downward slightly.f
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