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1. If the base buret were not rinsed with NaOH prior to filling, would the calculated normality of the base be TOO HIGH, TOO LOW, OR UNAFFECTED? WHY?
2. If the vinegar buret tip were not filled with solution before its initial reading was taken, would the calculated normality of the acid be TOO HIGH, TOO LOW, ORUNAFFECTED? WHY?
3. The active ingredient in Philips Milk of Magnesia is Mg(OH)2, in Amphojel is Al(OH)3; and in Aka-Seltzer is NaHCO3. Write balanced net ionic equations showing how each neutralizes stomach acid. (You can answer this question because it is a review of the "IonicChemical Equations" lab you did in Chem 1 A)
What I want to make sure is that Be(OH)2 is not a strong base right? reading a statement off of my chemistry book that "the principal strong base are the hydroxides of group IA elements and group IIA elements (except Be)." I also read that the giv..
the following interactions can contribute to the intrinsic binding energy during enzymatic catalysis? Choose all that apply.- hydrogen bonding
A 1.500 g sample of a compound containing merely C, H and O was burned completely. The only combustion products were 1.738 g CO2 and 0.711 g H2O. Explain what is the empirical formula of the compound. If the molecular mass of the compound was foun..
Problem- Find the approximate pH range suitable for the separation of Fe3+ and Zn2+ ions by precipitation of Fe(OH)3 from a solution that is initially .010 M in both Fe3+ and Zn2+
How many grams of sodium nitrite must be added to 120.0 mL of 0.15 M nitrous acid in order to prepare a buffer solution at pH 4.3? The pKa of nitrous acid is 3.337.
a solution contains 50.0g of heptane c7h16and 50.0g of octane c8h18 at 25 degrees c.the vapor pressures of pure heptane
Then 40.0 mL of this solution were titrated with 0.060 M HClO4. Calculate the pH at the first equivalence point.
Unfold the enzyme with urea and 2-mercaptoethanol. Then incubate and crystallize it in the presence of the substrate followed by X-ray crystallography.
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
A child discovered that her coin is missing and there is a hole in her pocket. She turned back and walked 24m east along the sidewalk. Then, she stopped for 18s and decided to head back to school.
How much heat (in kj) is required to warm 13.0 C of ice, initially at -15.0 C, to steam at 113.0 C ? The heat capacity of ice is 2.09 J/gC and that of steam is 2.01 J/gC
The biologist estimates she will need 5100 L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres.
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