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Titration of 0.2121 g of pure Na2C2O4 (134.00 g/mol) required 43.31 mL
of KMnO4.What is the molar concentration of the KMnO4 solution?
Titration of 0.2121 g of pure Na2C2O4 (134.00 g/mol) required 43.31 mL
of KMnO4.What is the molar concentration of the KMnO4 solution? The
chemical reaction is
2MnO4 + 5C2O4+ 16H* ->2Mn+ 10CO2+ 8H2O
Helium gas is contained inside a piston cylinder assembly as shown in the figure. Initially the gas is
having pressure 1 bar and volume 0.01 m3
. Then the current is supplied, and the gas is heated such
that the final pressure is 1.2 bar and the final volume is 0.0145 m3
. 10 % of the electrical energy
supplied to the gas is lost as heat from the cylinder. Determine the followings. If necessary, make
assumption(s) with justification.
(a) How long the current is supplied if process is ideal?
(b) How long the current is supplied if process is real?
describe the preparation of 900 ml of 3 M HNO3 from the commercial reagent that is 70.5% HNO3 (w/w) and has a specific gravity of 1.42
Let X, Y be a independent and identically distributed random variables, each having Poisson distribution with rate parameter λ. Find the probability generating function of W = X + Y and hence the mean and variance of W
The joint density function of the random variables X, Y is given as
f(x, y) = { 0.4 (2x + 3y), 0 < x < 1, 0 < y< 1
0, elsewhere
1)Determine P [ 0.33 < X < 2/3 |Y > 3 /4 ]
Use the localised electron model to describe the bonding in hydrogen cyanide and phosgene( COCL2)
What is the distance of center of gravity from center of buoyancy, if the depth of center of gravity from the top of the barge is 0.55m?
For each of the following molecules, write the Lewis structure(s), predict the molecular structure (including bond angles), give expected hybrid orbitals on the central atom, and predict the overall polarity. a. OF2 b. AsF5 c. IF5
A dinner party is attended by five men and five women.
(a) How many unique ways can the 10 people sit around the table. (1)
(b) How many unique ways can the people sit around the table with men and women
alternating seats.
#339914 on Dec 2023