ap chemistry
What is the value of w (work) when 1.3 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal
ap chemistry
1.95 mol of an ideal gas at 300 K and 3.00 atm expands from 16 L to 28 L and a final pressure of 1.20 atm in two steps: (1) the gas is cooled at constant volume until its pressure has fallen to 1.20 atm, and (2) it is heated and allowed to expand against a constant pressure of...
ap chemistry
A sample of gas in a cylinder of volume 4.09 L at 289 K and 3.43 atm expands to 7.73 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work
ap chemistry
How much heat is released if 2.00 moles CF2Cl2 reacts with 70.0 g F2 with a 75.0 percent yield? CF2Cl2 + F2 ! CF4 + Cl2 H for this reaction is -401 kJ/mol rxn. 1. 553 kJ 2. 739 kJ 3. 985 kJ 4. 601 kJ 5. 1069 kJ 6. 802 kJ
ap chemistry
Propane (C3H8) is burned in oxygen to pro- duce carbon dioxide and water. The heat of combustion of propane is -2012 kJ/mole. How much heat is given off when 3.0 mol C3H8 are reacted with 10.0 mol O2? 1. 4024 kJ 2. 2012 kJ 3. 916 kJ 4. 1555 kJ 5. 5122 kJ 6. 672 kJ 7. 6036 kJ 8...
ap chemistry
The energy change H associated with the reaction NBr3(g) + 3H2O(g) ! 3HOBr(g) + NH3(g)is +81 kJ/mol rxn. These bond energy values might be useful:O-H 459 kJ/mol; N-H 386 kJ/mol;O-Br 201kJ/mol. The strength of the N Br bond is
ap chemistry
1. 2H(g)+O2(g)->H2O2 2. Na(s)+1/2Cl2->NaCl(s) 3. Co2(s)->Co2(g) 4. So2(g)+1/2O2->So3(g) 5. 2H2(g)+O2(g)->2H2O
ap chemistry
Which of the following reactions as written corresponds to a standard formation reaction? 1. 2H (g) + O2(g) ! H2O2 (`) 2. Na(s) + 1 2 Cl2(g) ! NaCl(s) 3. CO2(s) ! CO2(g) 4. SO2(g) + 1 2 O2(g) ! SO3(g) 5. 2 H2(g) + O2(g) ! 2 H2O(`)
ap chemistry
Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO(g) + O2(g) ! 2CO2(g) H for this reaction is −135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted?
ap chemistry
What types of intermolecular interactions does chloroform (CH3Cl) exhibit? I) London dispersion II) dipole-dipole III) hydrogen bonding IV) covalent bonding Recall that chloroform is tetrahedral elctronic geometry with C as the central atom.
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