Reference no: EM13131303
Student query: Problem set
1 In which of the following compounds would you expect to find hydrogen bonding?
a: CH4
b: NH3
c: H2S
2 Concentrated nitric acid (HNO3 ) solution is a 72% by mass solution in water and has a density of 1.42g/cm3 . Determine the following
a: Molality of Nitric Acid
b: Molarity of Nitric Acid
c: Mole fraction of both experiments
3 The solubility of nitogen in blood is 5.60 X 10-4 m at 37.0° C and 0.800 atm N2 pressure. A diver makes a deep dive with a tank containing compressed air (Xn2 =
0.78) and is subjected to a total pressure of 5 atm. Answer the following:
a: What is the solubility of nitrogen in the divers blood at the bottom of the dive?
b: If you assume the mass of the divers blood is 5.0 kg, how many moles of nitrogen comes out of the divers blood when he comes to the surface?
c: How many ml of nitrogen gas comes out of the divers blood?
4 Trees that are able to withstand cold winter temperatures do so by removing water from the fluids within their biosystems, thus increasing the concentration of the solutes and lowering the freezing point of these fluids. If we assume that the tree sap is a sucrose (molecular weight = 342 g/mole) solution in water, what does the concentration of sucrose have to be for the tree to withstand -40.0° F winters?
5 A solution is prepared by dissolving 1.5203 g of sulfanilamide in 10.00g of a solvent called p-dichlorobenzene. The resulting solution freezes at 46.7° C. If the freezing point of p-dichlorobenzene is 53.1 C and has a K fp is 7.10° C/molal, what is the molecular weight of sulfanilamide?
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Reimbursing the fund
: Prepare journal entries to (1) establish the fund on January 1, (2) reim- burse it on January 8, and (3) both reimburse the fund and increase it to $500 on January 8, assuming no entry in part 2.
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How many deer can fallow-hawke capture
: Fallow-Hawke is funded by a local philanthropy in the amount of $32,000 for 2009. How many deer can Fallow-Hawke capture during 2009?
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Recurrence relation in algebra
: Bob deposits quarters and dollar bills into a vending machine to buy snacks. Find a recurrence relation for the number of ways he can deposit 25*n cents into the machine if the order matters.
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Find the probability that none of the pencils are defective
: In a sample batch of 46 mechanical pencils it is assumed that 18 are defective. If 5 mechanical pencils are randomly selected, what is the probability that none of them are defective?
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Explain the solubility of nitrogen in the divers blood
: What is the solubility of nitrogen in the divers blood at the bottom of the dive? b: If you assume the mass of the divers blood is 5.0 kg, how many moles of nitrogen comes out of the divers blood when he comes to the surface?
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What was the amount of the gain or loss on retirement
: assume that interest and premium or discount amortization have been recorded through january 1, 2013 .Record interest and amortization on only the bonds retired.
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Comparability of the resulting financial statements
: To what extent might companies' useof these different treatments reduce the comparability of the resulting financial statements?
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Compute the sample mean-median-mode and midrange
: From this data set, compute the sample mean, median, mode and midrange. Compute the 1st quartile and 3rd and interpret their meanings.
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Determining minimizing cost
: There are two companies, the IL Company and the MO Company. They are trying to build a 3000 ft. tunnel connecting St. Louis, IL and St. Louis, MO.
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