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!
Three colorless solutions in test tubes, with no labels, are in a test tube rack on the laboratory bench. Lying beside the test tubes are three labels: silver nitrate, AgNO3; hydrochloric acid, HCL; and sodium carbonate, Na2CO3. You are to place the labels on the test tube using only the three solutions present. Here is your analysis procedure:
A portion of test tube 1 added to a portion of test tube 2 produces carbon dioxide gas, CO2.
A portion of test tube 2 added to a portion of test tube 3 produces a white silver carbonate precipitate.
a. On the basis of your observation how would you label the three tubes?
b. What would you expect to happen if a portion of test tube 1 is added to a portion of test tube 3?
calculate the concentration of the hydronium ion in a solution prepared by mixing equal volumes of .050 molar HOCL and .020 molar NaOCl
In the acid-base reaction between Sr(OH)2 and HNO3, 0.75 L of 0.85 M Sr(NO3)2 is formed upon the reaction of 0.515 L of HNO3 solution and excess Sr(OH)2.
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution
After 48 h the pressure in the flask was observed to be constant at 488.0 torr. a. Calculate the equilibrium pressure of H2(g). b. Calculate Kp for this reaction.
The pH of a 0.10 M nicotinic acid solution is 2.93. What is the approximate value of Ka for nicotinic acid, HC6H4NO2? Assume small percent dissociation. pH = ?log10[H+].
Use le chatelier principle to explain why the buffer prevents large changes from occurring in pH when (a) an acid enters the blood stream (b) and base enters the bloodstream.
an unknown element forms a yellow ion xo . it forms a precipitate with silver ions. if 48.0 ml of a 0.250 moll solution
The density of a 0.438 solution of potassium chromate at 298 is 1.063 .Calculate the vapor pressure of water above the solution. The vapor pressure of pure water at this temperature is 0.0313 . Assume complete dissociation.
what is the pH of the HF solution before base is added. 3) What is the pH at eqivalence point. 4) what is the pH at 1/2 volume to equivalence point.
Calculate the overall energy change in kilojoules per mole for the formation of CaCL(s) from the elements. The following data are needed: (a) Eea for CL(g) = -348.6kj/mol. (b) Ei1 for Ca(g) = +589.8kj/mol. (c) Ei2 for Ca(g) = +1145kj/mol.
Consider the combustion reaction between 27.0 mL of liquid methanol (density = 0.850g/mL) and 13.5 liters of oxygen gas measured at STP. The products of the reaction are CO2(g) and H2O(g).
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