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Problem- If the enthalpy of fusion of ice is 6020 J/mol. and this value and does not vary appreciably over the range of - 5.0 - +10.0 0C. Determine the entropy change if one mole of ice is melted by heat supplied from the surroundings at a temperature of 7 0C.
Express your answer to two significant figures and include the appropriate units.
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
Calculate the heat of formation, Hof, of pentane given that the Hof of H2O(l) is -285.3 kJ mol-1 and Hof of CO2(g) is -393.5 kJ mol-1.
Suppose you have a sample which should melt at 100-101 degree C. You place 0.015 grams in a capillary tube in an oil bath at 101 degree C. If the heat of fussion for the sample is 50 cal/gram
Choose the answer in which the oxide with the formula given is correctly characterized as ionic or molecular.
balance the forward reaction with whole-number coefficientsalpha ch3ohl beta o2g---gtgamma co2g delta h2olgive your
Explain Why a glacial Acetic acid in a conductance set-up does forms gradually brighter lights that is dim to bright because it is frequently diluted with water?
the reactant concentration in a zero-order reaction was 6.00times10-2 it m after 185 s and 1.00times10-2 it m after 330
A gas occupies 4.04 L at 860 torr and 10C. What volume will it fill if the pressure is changed to 731 torr and the temperature is raised to 43 0C?
If 125 cal of heat is applied to a 60.0 g piece of copper at 25.0 C, what will the final temperature be? The specific heat of copper is 0.0920 cal/(g.C}) .
Describe how you would prepare 1.00 L of an effective buffer solution at each of the following pH values. Specify (i) which acid or base you would use (in each case, use 0.100 mol) and (ii) whether you would add HCl or NaOH, and how much. (a) pH =..
Define the acid dissociation for a weak acid HX at 25 degrees is 1.80 x 10-5. Compute the free energy of formation for X-(aq) at 25 degrees C. The standard free energies of HX (aq) as well as H+ (aq) at 25 degrees C are -121.5 kJ/mol and 0 respect..
An iron bar of mass 965 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
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