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!
Flamephotometric determination of sodium is based on the measurement of the absorbance, A, on three standard solutions with known concentration of sodium ions:
Data: ([Na+]; A): (0.10mM; 0.520)-(0.20mM; 0.705)-(0.40mM; 0.950). Plot the standard curve using the figure to the right:
A solution is prepared from 34.0 mg of sodium bromide (M=102.9g/mol) dissolved in water (V=100 ml). This solution is out of the measuring range and needs to be diluted.
Suggest how many times this solution should be diluted to give a concentration within the measuring range. Predict the absorbance (A) of the this diluted solution.
If a buffer solution is 0.150 M in a weak acid (Ka = 8.6*10^-5) and 0.510 M in its conjugate base, what is the pH?
Some pranksters managed to get a hold of some ethylene glycol, adipic acid and aromatic diisocyanate and filled a U-Haul truck full of polyurethane foam. A 26-foot U-Haul truck has a volume of 1611 cubic feet. If polyurethane foam has a density of..
An analyst is to determine the molarity of a NaOH solution. Three aliquots of standard KHP are weighed out: 0.3174 g, 0.4949 g, and 0.3869 g. These three aliquots were titrated using a NaOH solution and required 15.34 mL, 24.23 mL, and 18.59 mL, resp..
What is the reaction between four carbons with the triple bond on the third and fourth ones and HCl? Then what reaction is that product and HBr
Predict the distance between Si atoms in solid silicon. How does this compare to the distance between C atoms in diamond, Which has the same structure as solid silicon
AgCl is a sparingly soluble salt, with a solubility of about 10-5 M in pure water. Adding KCN increases the solubility of AgCl because: CN- reacts with Ag+ to make a soluble complex.
Explain why the 2.7 μm superficially porous particle enables separations similar to those achieved by 1.8 μm totally porous particles, but the superficially porous particle requires lower pressure.
Use the three-step method described in the module to predict the actual precipitates which form (if such is the case) when the following solutions are mixed
Write down a net ionic equation for any reaction that forms a precipitate and discover the anions that make gas upon adding of hydrochloric acid
Exactly 100 mL of 0.10 M nitrous acid (HNO2) are titrated with a 0.10 M NaOH solution. Calculate the pH for the following. (a) the point at which 80 mL of the base has been added
One solution contains 2.5 x 10^-3 M BaCl2; the other contains 2.5 x10^-3 M CaCl2. (Ksp for BaSO4= 1.5 x 10^-9; Ksp for CaSO4 =6.1 x10^-5). Calculate to determine which one, CaSO4 or BaSO4, will form precipitate.
a certain first-order reaction has a rate constant of 7.50times10-3 at 45 . how many minutes does it take for the
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