Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Problem- A student mixes 45.0 mL of 2.68 M Pb(NO3)2(aq) with 20.0 mL of 0.00201 M Na2SO4(aq). How many moles of PbSO4(s) precipitate from the resulting solution? Ksp [PbSO4 (s) ] = 2.5X1-^-8
What are the values of [Pb2 ], [SO42-], [NO3-], and [Na ] after the solution has reached equilibrium at 25 °C?
Illustrate structures to prove your interpretation.
A biochemist needs 750 mL of an acetic acid-sodium acetate buffer with pH = 4.50. Solid sodium acetate NaC2H3O2 and glacial acetic acid HC2H3O2 are available. Glacial acetic acid is 99% HCH3O2 by mass and has a density of 1.05 g/mL.
A student performed thin layer chromatography as explained in this experiment but made the following mistakes or changes in the procedure. In each case, define how the change/mistake would affect the Rf value:
Prepare 25.0g of aspirin, she is as well told that she should use a 50.0% excess of acetic anhydride as well as expect to get a 65.0 % yield in the reaction. Explain how many grams of salicylic acid as well as of acetic acid should she use
Maleic acid is used to retard the breakdown of fats. Imagine that you prepared a buffer by adding 14.35 millimoles of maleic acid and 20.57 millimoles of sodium hydrogen maleate to a 250.0mL volumetric flask
You have 250.0 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. Determine the concentration of the sugar solution after the water has been added
What volume of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a buffered solution at a pH of 3.50? Present answer in mL units and use 4 significant figures.
If the CO2 and O2 in the above reaction are measured at the same temperature and pressure, 1. How many milliliters of O2 are produced per minute. At what rate is the Na2O2 consumed, in grams per hour
What is the molar solubility of lead(II) chloride in a solution that also contains 0.15 M Cl- ions at 25 °C? The Ksp of PbCl2 is 1.6 × 10-5.
A few of cyclohexane solvent vaporized during the temperature versus time measurement. Will the loss of cyclohexane result in its freezing point being recorded as too high, too low or unaffected. Explain.
Solid aluminum reacts according to the balanced equation. If a total of 830 kJ of heat is produced in the reaction as written, how many moles of Al2S3 are produced?
the concentration of silicon in an iron-silicon alloy is 0.55 wt. what is the concentration in kilograms of silicon per
aluminum sulfate solution with water to a final volume of 1.450 L. Calculate the number of moles of aluminum sulfate before dilution.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd