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!
A solution may contain any of all of the group 3 cations. Based on the information below, which group 3 ions are present, absent or still in doubt after each of the steps below. a. Treatment of the solution with ClO- in alkaline solution yields a yellow solution and a colored precipitate. Ions Present: Ions absent: Ions in doubt: b. The yellow solution formed in (a) is acidified and treated with NH3. No change is observed. Ions Present: Ions absent: Ions in doubt: c. The colored precipitate in part (a) dissolves in nitric acid. Addition of excess 6M NH3 to this acid solution produces only a blue solution with no precipitate. Ions present: Ions absent: Ions in doubt:
Analysis of an unknown substance showed that it has a moderate melting point and is a good conductor of heat and electricity in the solid phase. Which of the following substance would have those characteristics
Compute the hydroxide ion concentration in a NH 3 solution that is 0.091 M and 0.028 M NH 4 Cl. Kb of NH 3 is 1.8 x 10 -5 .
How many grams of potassium chlorate decompose to form potassium chloride and 450. mL O2 at 128°C and 750. torr?
we place an excess ( more than can dissolve) of PbCl2 into 100 ml. of water and find that at equilibrium [Cl]=0.032 M . Calculate kc for the following reaction : PbCl2 = Pb+2Cl
A bone sample with 2.8 g of carbon has 17.4 disintegrations per minute. How old is the bone sample in years. What percentage of the atoms of carbon in the biosphere are C-14?
Calculate the distance (in Angstroms) and energy (KJ/mol) where the molecules are most attractive.
0.250 g of a binary unknown acid, HX, requires 31.96 mL of a 0.09668M NaOH solution when titrated. What is the identity of the unknown acid.
what mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 160 min. using a constant current
A quality control chemist at Dow Chemical tried to determine purity of NaOH using titration.He measured out 0.500 g NaOH sample, and dissolved it in 20 mL water. 31.2 mL of a 0.386 mol/L HCl solution was used to reach the end point.
How does the law of definite proportions help to distinguish between a compound of certain elements
Assuming that prior experiments have shown the single-step extraction removes only 71.0 % of the ethanol, what is the mass of ethanol in your original unknown?
Rank these elements according to first ionization energy (highest to lowest) : Ne, F, O, N, C, B, Be, Li. HINT: There is a general trend for ionization energy within a period of the periodic table
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