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!
Chromel is an alloy composed of nickel, iron and chromium. A 0.7176g sample of the alloy was dissolved in HNO3 and diluted to 250ml in a volumetric flask. A 50ml aliquot of this sample, treated with pyrophosphate to mask Fe and Cr, required 26.24ml of 0.05831 M EDTA to reach the endpoint. A second 60ml aliquot was treated with hexamethylenetetra to mask the Cr. Titrating with 0.05831M EDTA required 40.35ml to reach the end point. Finally, a third 60ml aliquot was treated with 50ml 0.05831 M EDTA and back titrated to the end point with 7.21ml of 0.07316M Cu2+. what are the weights of Ni, Fe and Cr in the alloy
What is the pH of a solution of 0.700 M K2HO4, potassium hydrogen phosphate. What is the pH of a solution of 0.450 M KH2PO4, potassium dihydrogen phosphate
you have a 30.0 L cylinder of helium at a pressure of 132 atm and a temperature of 24 degrees Celsius. the He is used to fill balloons to a volume of 3.00 L at 1.07 atm and 29 degrees Celsius.
a 29.0-g sample of water at 270. k is mixed with 48.0 g water at 340. k. calculate the final temperature of the mixture
A trainee in a medical laboratory will be released to work on her own when her results agree with those of an experienced lab technician at the 95% confidence level. Following are the results from a blood urea level:
Calculate the molarity of a solution of 25.2mL of methanol combined with enough water to make 622mL of solution (density of methanol is 0.79180g/mL).
a stock solution of nacl is made taking 150.2g in enough water to make 200.0ml. a 10.00 ml sample of this stock
What is the pH of a buffer that results when 0.50 mole of H3PO4 is mixed with 0.75 mole of NaOH and diluted with water to 1.00 L, The acid dissociation constants of phosphoric acid are Ka1 = 7.5 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 3.6 x 10-13
Ammonia is reacted with oxygen in the presence of a catalyst in the first step of the industrial process to make nitric acid. The reaction is shown below:
Calculate the force of attraction between a cation with a valence of +2 and an anion with a valence of -2, the centers
Gold has a density of 19.3g/ml .suppose you have 100.0 glonkins of gold., what volume in liters will the gold occupy.
Calculate the solubility (in M units) of ammonia gas in water at 298 K and a partial pressure of 9.00 bar . The Henrys law constant for ammonia gas at 298 K is 58.0 M/atm
Dissolving 3.49 g of an impure sample of calcium carbonate in hydrochloric acid produced .635 L of carbon monoxide (measured at 24.degree C and 773 mmHg). calculate the percentage by mass of calcium carbonate in the sample
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