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Glycerol (a non-electrolyte that can be used as antifreeze in a car radiator) has a density of 1.261 g/mL and a molecular weight of 92g. If 100 mL are mixed with 1 kg of water,what is a good estimate of the temperatureat which this solution will freeze ? Kfwater =1.861?C/molality
write the net ionic equation for the following oxidation-reduction reactions. substances labeled aq are soluble and
Because molecular bromine is a strong and toxic oxidant, excess bromine is neutralized. Addition of the aqueous sodium thiosulfate is used for that reason. Sodium thiosulfate is a good reducing agent and converts molecular bromine to sodium bromid..
Calculate the activation energy of a reaction whose rate constant is 4.22 x 10?4 s?¹ at 25°C and 4.54 x 10?4s?¹ at 45°C.
Methane and hydrogen sulfide gases react to form carbon disulfide and hydrogen gas(es). CH4(g) + 2 H2S(g) CS2(g) + 4 H2(g) At a certain temperature and pressure 28.7 L of CH4 reacts with 57.4 L of H2S.
Calculate the values of Avogadro's number and the Faraday assuming the charge in an electron is 1.602 x 10^-19 coulombs/electron. Also calculate the mass the magnesium anode have lost during the process. The answers will be a number.
A 11.655 g aliquot of this solution is then titrated with 0.1079 M HCl. It required 30.25 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
What's the energy difference between axial and equitorial conformation of hydroxycyclohexane. What is hydroxycyclohexane
Does purified aspirin appear to be purer than crude aspirin? What is your evidence?
What is the difference between "knobs in holes" conformation versus "ridges in grooves" conformation, especially which type of alpha proteins would we typically find such conformations
Three isomeric ketones with the molecular formula C7H14O are converted into heptane by Clemmensen reduction. Compound A gives a single product on Baeyer-Villiger oxidation; compound B gives two dissimilar products in very different yields
You know that viruses have a high mutation rate change genetically rapidly, which results in the appearance of new proteins on the flu virus's coat. Explain how does this help explain why Mr James needs to get a flu shot each year
Explain a sample of liquid mercury mass 67 g and temperature 92 C is poured into 96 g of H2O at 15 C. Compute the final temperature of the mixture assuming no heat is lost. The heat capacities of Hg as well as H2O are 27.98 and 75.33 J/mol/K, resp..
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