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Assume the eccentric professor has a daily special request for her coffee. She likes to have the 250.0 mL of coffee frozen at -15.0°C overnight and then want it heated to 95°C when she gets there in the morning. (?Hfusion = 6.02 kJ/mol; ?Hvaporization = 40.67 kJ/mol; Csolid = 33.1 J/(molx°C); Cliquid = 75.4 J/(molx°C); Cgas = 33.1 J/(mol x °C) Boiling point = 100°C; Melting point = 0°C) How much heat energy is required to heat the coffee as per the special request
A patient's blood test shows that she has elevated levels of LDL (low density lipoproteins) at 4.12 mmol/L. Convert this concentration to units of molarity (mol/L)
treatment of .25g sample of impure potassium chloride with excess AgNO3 resulted in formation of .2912g AgCl. Calculate the % of KCl in the sample.
Predict the products and show the reaction mechanism for the acid catalyzed Fischer esterification reaction between ethanol and acetic acid (CH3CO2H)
The solution to physical chemistry, A laser used to read CDs emits red light of wavelength 700 nm. How many photons does the laser emit per second
a compound is composed of only C.H and O. the combustion of a 0.519-g sample of the compound yields 1.24g of CO2 and 0.255g of H2O.
The equilibrium constant for the interconversion of PCl5 and PCl3 is 0.0121: PCl5 = PCl3+Cl2. A vessel is charged with 0.123 mol PCl5. At equilibrium what is the concentration of PCl3
Arrange these compounds in order of increasing boiling point and explain your reasoning. (assume similar mass) CH3OCH3 CH3CH2CH3 CH3CH2OH 2. Which of the following compounds would have the greater viscosity?
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acididc, basic, or neutral? Show your work.
Combustion analysis of naphthalene, a hydrocarbon used in mothballs, produced 8.80 g CO2 and 1.44 g H2O. Calculate the empirical formula for naphthalene?
Calculate the volumetric size of a water molecule for water in the form of ICE just below the melting point. Give answer in angstroms
The heat of vaporization of water in this temperature range is 2.40 kJ/g. The heat capacity of water is 4.184 J/g.K. Answer in grams of water
Explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. Your answer should include an explanation of (a) the role of heme and (b) the role of the protein itself.
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