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!
The dissociation constant of the weak acid HF IS Ka+ [H+][F-]/[HF]. If at equilibrium the concentrations of H+ and F- are each 2.6 X 10-3M and the concentration of HF is 0.010 M, what is Ka for HF?
The reaction between HCO-3 and its conjugate acid creates a very imortant buffer in your blood. Explain what a buffer does.
Write down and explain the feature(s) in the Schrödinger equation that lead to the "electron correlation problem". Next, explain the approximation(s) that lead to the introduction of effective nuclear charge (Zeffective). Be sure to define effecti..
(A) Solid magnesium carbonate reacts with an aqueous solution of perchloric acid. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.
Calculate the internal energy and ethalpy change if the volume is changed from 10L/Mmol to 20L/mol and the temperature is changed from 300k too 600k. Use the vander waals equatino and assume that no phase changes ocurr
A vitamin tablet contains 789 mg of vitamin C (C6H8O6). How many vitamin C molecules are contained in the tablet? Enter your answer in scientific notation.
Glass cuvette, used for precision measurements in a spectrometer, are marked so that they always have the same orientation in the sample compartment. What error does this minimize and why?
Calculate the mass percent of a solution that is prepared by adding 61.3g of NaOH to 492g of H2O.
The wavelengths of the sodium doublet can be accurately measured despite the fact that they are very short. The IUPAC standard for the meter is, in fact, based on the wavelength of a particular line in the emission spectrum of the element krypton
A certain weak base has a Kb of 7.30 × 10-7. What concentration of this base will produce a pH of 10.07
Rank the following compounds in order of increasing electrical conductivity: 0.1 M formic acid (HCOOH), 0.1 M (NH4)3PO4, 0.1 M KCl, and 0.1 M glucose solution (C6H12O6). Justify your answers with an explanation.
Write the equation and states 1. a double replacement between copper (II) nitrate and sodium phosphate. 2. Sodium reacts w/ a solution of iron (II) sulfate forming solid iron and sodium sulfate.
The lethal doses (expressed in ppm by volume) of two gases A & B are the same and equal to 20 ppm. Indicate how many mg of each gas would be needed to reach the lethal concentration in a room of 46m^3.
A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 L and the initial pressure of chlorine was 1.45atm The piston was pushed down to change the volume to 1.00 L
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