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A steam engine operates between 138 C and 38 C. what is the minimum amount of heat tahat must be withdrawn from the hot reservoir to obtain 1000 j work?
When preparing the solutions for Part A, an aqueous solution of diamine and NaOH is made. Why isn't a solution of NaOH and diacid chloride in cyclohexane made
Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess
The standard reduction potential for the reduction of Eu3+(aq) to Eu2+(aq) is -0.43V. Which of the following substances is capable of reducing Eu3+(aq) to Eu2+(aq) under standard conditions
You have 4.507 L of a 0.1572 M H3BO3 (boric acid, Ka = 5.800x10-10) solution. To convert this into a buffer having a pH of 9.3380, how many grams of KH2BO3 (M.W. 99.926) should be added to the solution?
What is the minimum external voltage must one supply in orger to perform the electrolsis of molten CaCl_2(l)? Suggest a means for supplying this energy.
Mixture of equal amounts of both enantiomers of given compounds does not rotate the plane of polarized light. (e) Racemic mixture has the same melting point as both corresponding enantiomer.
How can you estimate the pH range of an indicator's color change. why do some indicators have two separate pH ranges.
MnSO4 is converted to MnO2 in a basic medium as oxygen gas is converted to hyroxide ion. In this case, is the sulfate ion a spectator ion. (NaOH is also present. Is sodium ion also a spectator ion) A. Print the oxidation half-equation B
a battery has a volume of 1.78l and contains 3.28x10^3 grams of sulfuric acid, what is the density of sulfuric acid in g/ml?
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide if 2.90 g of the gas is collected when 10.5 g of marble reacts
All the offspring of a cross between a normal winged fly and an miniature winged fly have normal wings. What is the expected phenotypic ratio of a cross between two miniature winged flies?
Draw the three different plates you would expect from obtaining a TLC from ibuprofen on silica gel using (a) toluene, (b) ethyl acetate, and (c) methanol as the eluting solvents
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