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The work performed by a system against the atmospheric pressure to which it is kept open during an experiment in the lab is equal to.
The following processes is a likely change in a redox reaction. Label the chemical change as an oxidation process, a reduction process, or neither
For each reaction, use the solubility rules as well the equations in the background information to predict if there is a reaction, If there is no reaction indicate so by writting NR under predictions, write gas for gas formation and PPT for precip..
There is less waste. II. Harsh reagents are avoided. III. It uses recombinant technology. IV. It needs intense purification.
A 2.983 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.910 grams of KI and 50.00 mL of a 0.00894 M KIO3 solution. The excess I3..
Calculate the amount of energy released in the formation of one mole of BaO bonds(not Lattice energy) The radius of the barium ion is 1.35 Angestrom
Molecular orbital (MO) theory predicts the O2 +2(a +2 CHARGE) ion has a bound order of
The partial pressure of O2 in air at sea level is 0.21 atm. Using Henry's law, calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20C and an atmosphere pressure of 650 torr.
What mass of solid sodium formate (of MW 68.01) must be added to 140 mL of 0.3 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 3.77? Ka = 0.00018 for HCOOH.
A certain reaction has an activation energy of 70.0 Kj/mol and a frequency factor of A1 = 4.80×1012. A) What is the rate constant, k , of this reaction at 30.0 C
How many grams of glucose are in 100. rm mL of the final solution?
If 200 ml of gas at 400 torr is transferred to a 20.0 ml cotnainer. What will the new pressure be if the temperature is kept constant?
If 250 grams of SO2 and 650 grams of Br2 react in the presence of excess water, what mass of HBr will be formed?
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