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A .117 gram sample of a metal reacts with hydrpchloric acid to produce 36.3mL od dry hydrogen gas. what is the equivalent weight of this metal?
why we call benzene phenyl and not benzyle when one hydrogen is removed because in case of alkanes we name them alkyl on the removal of one hydrogen atom.
A chemist wishes to prepare 200mL of a saturated solution of BaF2, the concentration of which is 6.3 x 10-3 mol/L. Determine the mass of BaF2 that will be needed to make up the 200mL of the solution.
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
What is the mole fraction of HO2CCH2CHOHCO2H in this solution suppose you dissolve 2.56 grams of malic acid HO2CCH2CHOHCO2H in 50.0 grams of H 2 O.?
Describe the nature and characteristics of PCB's. Why are they of importance to an EH&S or FS professional who encounters them when coming upon an incident scene where they are present?
What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?
The total molarity of acid and conjugate base = 0.100M. A boy adds 4.20 milliliters of a 0.370 M solution to the beaker. Determine how much will the pH change?
Determine the final pH of a solution that is prepared by mixing 25 mL of 0.15 M sodium hydroxide( NaOH )with 20. mL of 0.20 M HA,( a weak acid with Ka = 2.3 x 10-6)?
If you have 330 ml of water at 25 degrees and add 110 ml of water at 95 degrees, What is the final temperature of the mixture.
Calculate the concentration of ions in the following solutions, [I] in AgI in AgI solution with [Ag+] = 9.6E-9 M Ksp=8.3E-17
determine the initial concentration - Constant rate is 3.20×10-4 M/s for a zero-order reaction. concentration has dropped to 9.00×10-2 M after 60.0 seconds
Gas x effuses 0.629 times as far as oxygen under the same conditions. what is the molar mass of gas x.
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