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What is the difference between the chemical formula and the condensed formula of organic compounds? What information does each provide?
Naturally occurring cobalt consists of only one isotope, ^59Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, ^60Co, relative atomic mass 59.9338, is used in radiation therapy for cancer.
Why is methyl -m- nitrobenzoate formed in the reaction instead of the ortho or para isomers in the methyl benzoate and nitric acid with sulfuric acid as a catalyst
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 72% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 multiplied by 10-12.]
For which of the following equilibria does Kc correspond to an acid-ionization constant, Ka? NH3(aq) + H3O+(aq) NH4+(aq) + H2O(l) NH4+(aq) + H2O(l) NH3(aq) + H3O+(aq) NH4+(aq) + OH-(aq) NH3(aq) + H2O(l) HF(aq) + OH-(aq) H2O(l) + F-(aq) F-(aq) + H2..
You Have 500 mL of a buffer solution containing .2 M CH3COOH and .3 M CH3COONa. What will the pH of this solution be after the addition of 20 mL of 1.00 M NaOH solution? (Ka=1.8x10^-5)
Determine the percent yield for the reaction between 82.4g of Rb and 13.49g of O2 if 39.7g ofRbO2 is produced
An 11.0 gram sample of CaCl2(s) is dissolved in 125 grams of water with both substances at 25.0°C. If the final temperature of the mixture is 39.2 °C.
what proportion of the electromagnetic spectrum does the radiation fall
Phosphoric acid, H3PO4, is a triprotic acid, for which Ka1=7.2 x 10-3, Ka2 = 6.3 x 10-8 and Ka3 = 4.2x 10-13. What is the value of Kb for hydrogen phosphate anion, HPO4 2-?
If the jogger's return trip follows the same path, how do average speed and magnitude of the average velocity compare for the total trip?
In the laboratory, you dissolve 45.1 g of potassium carbonate in a volumetric flask and then add water to reach a total volume of 375 mL. The molar mass of potassium carbonate is 138.21 g/mol.
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to manmade factors like pollution. Discuss the effect of pollution at the local, regional, national, and global level.
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