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Question- A 2.00 gram sample containing Fe requires 32.0 mL of a 0.1 N Permanganate solution to be used in a red-ox titration, what is the percentage of Fe in the sample?
Please take care to reply the question as mark are evenly granted for each point
A 347 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 630. mmHg. Calculate the moles of Ar present.
The student is supposed to observe the bacterium and make a drawing. However, the student, having just learned about the Heisenberg uncertainty principle in physics class, complains that she cannot make the drawing.
if the pressure of a gas sample is quadrupled and the absolute temperature is doubled by what factor does the volume of
For the following solution, calculate the millimoles of solute: 557mL of a solution containing 7.71ppm CaCO3
Question- A battery is constructed by placing copper and lead electrodes in contact with 1.0 molar CuS04(aq) and Pb(N03)2 (aq) solutions, respectively. If sulfuric acid is then added to the Pb(N03)2 solution,
Calculate the pH of the solution after the following volumes of HCl have been added. (For each part remember t ask yourslef these questions. What units am I working in?
The bond angles in H3O+ are:? a) slightly less than 109.5o b) exactly 109.5o c) slightly less than 90o d) exactly 90o
What us the pH at the equivalence point for the titration of 0.2 M nitrous acid by 0.2 M sodium hydroxide. Ka for nitrous acid is 4.5 x 10^-4
how many ml of an ethanol-water solution prepared by dissolving 15.0 cm3 of ethanol density 0.789 g cm-3 in sufficient
The mixture of tetra phosphorous trisulfide as well as powdered glass is in the tip of strike anywhere matches and this compound is made up using the above equation.
Construct a model of 2-chlorobutane. Which carbon in the chain is a chiral center. What has highest priority. Lowest
methyl trifluoroacetate is more reactive than methyl acetate, in nucleophilic acyl substitution reactions. Explain.
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