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Consider the two diagrams that follow.
(a) Based on (i), write an equation showing how ?HA is related to ?HB and ?HC. How do both diagram (i) and your equation relate to the fact that enthalpy is a state function?
(b) Based on (ii), write an equation relating ?HZ to the other enthalpy changes in the diagram.
(c) How do these diagrams relate to Hess's law?
100.0 ml of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide. An appropriate indicator is used. Ka for acetic acit is 1.7 x 10^-5. Calculate the pH in the flask at the following points in the titration.
The average osmotic pressure of blood is 7.7 atm at 25.0c. What molarity of a sterile saline (i.e., aqueous sodium chloride) solution is isotonic with blood (Use a van't Hoff factor of 2.00 for sodium chloride.)
The Delta G for the freezing of H2O(l) at -10 Celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610J/mol
Initially a sample of ideal gas at 412 K occupies 12.62 L at 0.6789 atm. The gas is allowed to expand to 19.44 L by two pathways: (a) isothermal, reversible expansion and (b) isothermal, irreversible free expansion. Calculate delta S total, delta ..
The volume of a sample of chlorine gas is 98.6 mL at 31.4 C and 769.6 mmHg. What volume will the sample occupy at 23.2 C and 748.8 mmHg? Please show how to work out the problem if you can
Determine what is the longest possible wavelength of light that could ionize an atom of bismuth if the first ionization energy of bismuth is Ei1 = +70 kJ/mol.?
You pass a road sign saying "New York 115 km." If you drive at a constant speed of 65 mi/h, how long should it take you to reach New York? (Round to the nearest minute.)
1. a coordination compound is formed from rutheniumii chlorideand ammonia. what is the correct formula for this
Suppose you were to prepare a buffer solution using ammonia and ammonium chloride. What would be the molar ratio of acid to its conjugate when the pH was adjusted to each of these values. (Kb = 1.8 multiplied by 10-5) (a) pH = 10.19
How many grams of solid Fe(NO3)3 (MW = 403.998 g/mol) should be added to 100mL of 1.0 M HNO3, so that the concentration of FE(NO3)3 is 0.02 M
solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for this reaction.
Write a 1-page summary that discusses the following about creating secure networks: -identify methods of securing routers and switches -recognize characteristics of a variety of types of firewalls
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