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Why the no. of electron changes by one or increases by one in elements?
Determine ?H for the formation of one mole of aluminium(III) oxide, Al2O3(s) from the elements?
How does this technique error affect the molar concentration of the KIO3 solution. Will the reported molar concentration of the standardized Na2S2O3 solution be too high, too low, or unaffected
A. tetrahedral B. square planar C. square pyramidal D. trigonal bipyramidal E.octahedral F. T-shaped G. see-saw, butterfly, or unsymmetrical tetrahedron
what purpose does sodium carbonate serve during the extraction of caffeine from tea leaves?
26.0cm of a solution containinh 1.86g of X2CO3 in 250 reacted completely with 27.0cm of solution contain 3.65g of HCL per dm,calculate the molar mass of X2CO3 and relative atomic mass of X, and identify X.
Two solutions, "A" and "B", are labeled "0.21 M CaCl2" and "0.34 M CaCl2", respectively. Both solutions contain the same number of moles of CaCl2. If solution A has a volume of 25 mL, what is the volume of solution B
The mercury level in the open end of the manometer is 22 mm below that in the side connected to the argon. What is the pressure of argon, in mmHg
a buffer that contains 0.52 m base b and 0.33 m of its conjugate acid bh has a ph of 8.78. what is the ph after 0.0032
A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl. The Ka for HC7H5O2 is 6.5 x 10-5.
You will then make a Kool-Aid solution by dissolving the powder in an entire packet of lemon-lime Kool-Aid in 250.00 mL solution. You find the powder in a packet of lemon-lime Kool-Aid has a mass of 3.629 g.
Gas in a tank contains a poison at a concentration (CT), but the gas is leaking into the surrounding room at a rate of T cm3/min. Meanwhile, an air conditioner brings fresh air into the room at a rate of A cm3/min.
Explain, why you used sulfuric acid in the experiment, not HCl. (3) Give the structures and names (including description of stereochemistry) of three alkenes produced in dehydration of 3-methyl-3-pentanol.
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