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Imagine that you are a charge nurse in a nursing home. You are typically the only medical personnel in the house at any one time. A patient who is known to have excess stomach acid asks you to give him an antacid tablet. The typical antacid is either calcium carbonate or magnesium carbonate. The antacid tablet that you stock requires 25.82 mL of 0.200 M HCl to titrate to its equivalence point. Assume that stomach acid has a pH of 1.1. Also, suppose that the patient's size and weight indicate that his stomach will hold approximately 140 mL of stomach acid.
Imagine that you are a geologist trying to determine the amount of iron in the samples of rocks in a mountain side. A typical reaction used to determine the amount of iron in a sample is to combine it in a reaction with permanganate ion, MnO4-, with Fe2+ in an acidic solution. The skeleton reaction is: MnO4-(aq) + Fe2+(aq) à Mn2+(aq) + Fe3+(aq)
Problem- A 25-mL sample of river water was titrated with 0.0010 M of K2CrO7 and required 8.3 mL to reach the end point. What is the chemical oxygen demand, in miligrams of 02 per liter, of the sample
what is the theoretical yieldwhat is the theoretical yield of sodium thiosulfate pentahydrate when 3.25 g of sulfur is
C.A. Yates was given a 50.0mL sample of the weak acid. The known concentration of the weak acid is .25M. After preparing a buret he delivers 25.0mL of the weak acid into a 100mL Erlenmyer flask. He then titrated this solution using a standardized ..
How long will it take for the concentration of XY to decrease to 12.5% of its intial concentration when the initial concentration is 0.100M? When the initial concentration is 0.200M?
a solution of sulphide ct10-6m is blended into a 0.4m sodium chloride solution in a closed container. plot a pc-ph
In the following reaction, C2H5OH + 3O2 → 2CO2 + 3H2O, if 54 grams of water is produced, how many grams of C2H5OH is needed for the reaction.
Question- A galvanic cell consists of an Au/Au3+ electrode (Eo=+1.50v) and a cu/cu2+ electrode (eo=+0.34v). Calculate the cell potential (Ecell) at 25 Celsius if [Au3+]=2.8x10-7 M and [Cu2+]=7.3x10-5
An organic compound was synthesized & a sample of it was analyzed & found to contain only C, H, N, O, & Cl. It was observed that when a 0.150g sample of the compound was burned it produced 0.138g CO2 & 0.0556g H2O.
A sample of a radioactive substance used in detecting skin cancer produced 592 counts in one minute at the beginning of a test and a count of 451 counts in one minute after one day. If the background counts-per-minute was 48, what is the half-life..
what is the analytical molarity of fecl3 in a solution prepared by dissolving 1.340 g of fecl3 in water and diluting to
Could someone please help me? What is the equation(s) for what happens when aluminum chloride is hydrolyzed in water. as well as for when acetyl chloride is hydrolyzed in water.
sample of sodium reacts with 0.497 kg of chlorine forming 819 g of sodium chloride, what mass of sodium reacted
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