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(a) What is meant by the term reaction rate?
(b) Name three factors that can affect the rate of a chemical reaction.
(c) Is the rate of disappearance of reactants always the same as the rate of appearance of products? Explain.
Problem- We wish to prepare a buffer of pH 10 using common laboratory reagents. How many mL of 6M HCl would we have to add to a solution prepared by adding 100 mL of 15M NH3 to 200 mL of water? Ka of NH4 + = 5.70x10-10, pKa = 9.24.
a gaseous mixture containing 20 moles of nitrogen 10 moles of oxygen and 5 moles of methane exerts a total pressure of
from your understanding of colligative propertieshow would design an experiment to measure the freezing point of a
Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
Car manufacturers are developing engines that use H2 as fuel. In Iceland, Sweden, and other parts of Scandinavia, where hydroelectric plants produce inexpensive electric power, the H2 can be made industrially by the electrolysis of water.
since methylene chloride and water to not mix by wetting a piece of filter paper with water addition of both layers to
H2S and H2O have similar structures and thier central atoms belong to the same group. Yet H2S is a gas at room temperature and H2O is a liquid. Use bonding principles to explai why this is. What is the difference between H2O and H2S
Give the structure of the sodium salt of methyl salicylate and in the second part of the experiment, what is the structure of the anionic form of salicylic acid before it is acidified with the dilute sulphuric acid?
a compound of p and f was analyzed as follows heating 0.2324 g of the compound in a 378-cm3nbspcontainer turned all of
Element 107, now named bohrium, was synthesized by German researchers by colliding bismuth-209 with chromium-54 to form a bohrium isotope and one neutron. Write a nuclear equation to represent this reaction.
AIDS drugs such as Indavir and Amprenavir act by 1. inhibiting an enzyme that catalyzes the cleavage of a peptide bond between the gag and pol fragments in the gag-pol protein.2 2.catalyzing the cleavage of a peptide bond between the gag and pol ..
The specific rotation of (R)-(+)-glyceraldehyde is +8.7. If the observed specific rotation of a mixture of (R)-glyceraldehyde and (S)-glyceraldehyde is +3.5, what percent of glyceraldehyde is present as the R enantiomer
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