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1. It is observed that a solution B of 2.57 g with molar mass 132.6 g/mol and 34.28 g of A froze at 53.1 degree Celsius temperature while we have solution A the freezing point of pure substance A is 72.0 degree Celsius determine the value of Kf for solution A?
2. Compute how many ml of C2H3NaO2(0.2 M) need to be added to 200 mL of 0.1 M CH3COOH to make a buffer of pH 5 and also find out what would be the total concentration of C2H3O2 be in this (acetate + acetic acid) solution ?
Calculate the total concentration of lead dissolved ([Pb]total) in a solution saturated with PbI2(s) and containing dissolved I- with a concentration of [I-] = 0.294 M. The solubility of lead is governed by the reactions shown below.
Calculate the pH of a solution made by adding 16.0 g of sodium formate
hat conclusions can you make concerning the size of the central atom X and the X-H bond length? Compare the four models of CHBrICI. Are they all the same (superimposable on each other? If the answer is yes, can you construct any that are not the s..
which of the binary compounds formed by the following pairs of elements contain polar covalent bonds. Check all that apply. A) C and Fe B) Na and O C) Al and S D) Se and O which from above are considered ionic compounds
Complete and balance the equation for this reaction in acidic solution. Phases are optional.
A voltaic cell is based on the reaction Sn(s)+ I2 (s) --> Sn^2+ (aq)+ 2I^- (aq). Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 70.0 g of Sn is consumed?
Draw the three dimensional structure of both the endo and exo adduct formed from 1,3-cyclopentadiene and maleic anhydride.
The analysis of a hydrocarbon revealed that it was 85.6281% C and 14.3719% H by mass. When 2.55 g of the gas was stored in a 2.5 L flask at 127.276 C.
Platinum exhibits an extremely intense emission line at 214.4 nm. Could the spectroscope that you used in this lab, also be used to observe this electromagnetic radiation. Explain.
For supercritical carbon dioxide, predict the effect that the following changes will have on the effect that the following changes will have on the elution time in an SFC experiment.
Calculate ?Srxn for the following reaction. The S for each species is shown below the reaction. 4NH3(g) + 5O2(g) -> 4NO(g) + 6H2O(g) 192.8 205.2 210.8 188.8 S(j\J/mol*K)
what is the molar mass of the gas. B. If the flask can withstand pressures up to 1.30 atm, calculate the maximum temperature to which the gas can be heated without breaking.
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