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Solid potassium chlorate decomposes upon heating to form solid potassium chloride and oxygen gas. A mixture of potassium chlorate and potassium chloride with a mass of 7.44 g is heated until all the potassium chlorate has decomposed. If 789mL of gas is collected over water is collected over water at .976 atmospheres and 30.0 C, explain what the percent potassium chlorate is in the original mixture? Vapor pressure of water is at 30.0 C = .023 atm.
Using the standard enthalpies of formation in Appendix C in the textbook, calculate the value of ΔHº for the combustion reaction. The formula was for the combustion of Benzene (C6H6(l))
The energy of activation for a certain reaction is measured to be 90.0kj/mol. The rate comstant of this reaction is 302.6 s^-1 at 300k. Suppose the reaction is heated to 316.0K. What will be the value of the rate constant at the higher temperature
how would you expect the amino acids glycine alanine and phenylalanine to travel relative to each other on the silica
(FW 180.16 g/mol) is burned in a calorimeter whose heat capacity is 29.7 kJ/oK, the temperature increases by 2.635oK. Calculate the heat of combustion of fructose in kJ per mole.
Which set of the following choices contains all the true statments and none of the false statements? a) The H atom and Be3+ ion each have one electron. Their line spectra are identical.
Draw the structure of the bromohydrin formed when (E)-3-methyl-3-hexene reacts with Br2/H2O.
Classify each of the following compounds as ionic or molecular. If it is ionic, classify it as a Type I or Type II ionic compound. CoCl2, CF4, BaSO4, NO
A solution prepared by mixing 100 mL of 0.2 M glycine and 100 mL of 0.2 M Cu2+ is adjusted to a pH of 7 with NaOH. Calculate [Cu2+], [CuA+], [CuA2], [HA], and [A-] in the solution.
an antacid tablet from brand a is broken in half. one of the pieces weighs 0.56g. this piece is stirred with water and
Which elements exist as three-dimensional, solid structures in their most stable states under atmospheric conditions. Check all that apply. a.)Cl b.)Hg c.)Si d.)Br e.)Mg f.)O g.)Kr h.)I
carbon monoxide (CO) in an reaction to produce 2 moles of iron and three moles of carbon dioxide, what is the mole ratio between these reactants?
20.0 mL of 0.250 M calcium nitrate are mixed with 25.0 mL of 0.150 M potassium nitrate. How many grams of product will form
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