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1) A 25.0 mL sample of 0.300 MNH3(aq) is titratedwith 0.300 M HCl(aq). What is the pH at the equivalence point?(Kb of NH3= 1.8 x 10-5)
2) A 50.00 mL sample of vinegar is titrated with 0.584 M NaOH(aq). If the titration requires 32.80 mLof NaOH(aq), what is the concentration of acetic acid in the vinegar?
In an experiment 1.550g of mercury oxide decomposed to give oxygen gas and 1.435g of liquid mercury. What is the empirical formula of mercury oxide
draw the structure of the expected dichlorocarbene adduct of methyl methacrylate. another product could have been obtained. It is the chloroform adduct to the double bond (Michael type reaction). what would this structure look like.
What amount of solid NaOH must be added to 1.0 L of a 0.15 M H2CO3 solution to produce a solution with [H+]=3.3*10^-11 M ? There is no significant volume change as the result of the addition of the solid.
The solubility of solute in a solvent depends on various parameters, such as temperature, pressure, the nature of the solute, and the nature of the solvent. Considering these parameters, identify the statements that are correct for the solubility ..
Estimate the time it will take to flush 99% of the discharge from the lake. Immediately after the spill, the lake, completely mixed, has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the ..
Calculate the mass percent composition of carbon in each the following carbon compounds. Express your answer using 4 significant figures. C4H10 C6H10 C8H13O5N
Explain in detail how you would prepare exactly 250 mL of a 4.75 M solution of sodium hydroxide, starting with solid NaOH.
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is tripled and that of Br- is tripled? Just put in the number as a whole number or fraction.
the enthalpy of combustion of c12h22o11is -5652 a 2.5 g sample of lactose was burned in a calorimeter that contained
Without belaboring the fact, food is just a mixture of chemicals. The pleasant fruity odor from some foods is often due to the presence of a class of organic compounds called esters. For example, ethyl butyrate gives the scent of pineapple and oct..
The pKa of aspirin (acetyl salicylic acid) is about 3 while the pH of stomach acid is about 1.0 Circle the approximate proportion of ionized (deprotonated and charged for acid) to unionized (protonated and uncharged for acid) aspirin that would oc..
Phenylacetic acid (C6H5CH2COOH) is one of the substances that accumulates in the blood of people with phenylketonuria, and inherited disorder that can cause mental retardation or even death
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