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Why does tree leaves inside school premises increase soil PH


 Sn(s) + Sn4+(aq) ⇌ Sn2+(aq)


 Aniline, C6H5NH2, when reacted with picric acid gives a derivative with an absorptivity of 

 134 cm−1

g

−1 L at 359 nm. What would be the absorbance of a 1.00 × 10−4 M solution of 

 reacted aniline in a 1.00-cm cell


7. Aniline, C6H5NH2, when reacted with picric acid gives a derivative with an absorptivity of
134 cm−1
g
−1 L at 359 nm. What would be the absorbance of a 1.00 × 10−4 M solution of
reacted aniline in a 1.00-cm cell?

When 21.3 g of CO2 are made, how much heat is released?


How to prepare acetylene from calcium carbide.


cube of osmium metal has 1.500 cm on a side and has a mass of 0.07631 Kg

at 25°C. Calculate the density of the cube. 


Balance the following redox reaction in basic media:

CN-

(aq) + MnO4

-

(aq) → CNO-

(aq) + MnO2


25.00 mL aliquot of 0.016 M NaCl was titrated with 27.52 mL of 0.18 M

AgNO3. Determine whether a precipitate will form at end point. Ksp AgCl = 1.6

x10-10

 


Calculate the pH of 0.12 M NH3 solution. Kb NH3 = 1.8 x10-5