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A 0.468 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the calorimeter and the 1 kg of water rose from 20.45 degrees Celsius to 23.65 degrees Celsius. The heat capacity of the calorimeter is 2.21 kJ/Degrees Celsius. Using this information, determine the heat of combustion per mole of pentane. Could someone please explain clearly step by step on how to solve this problem.
A graduated cylinder contains 133 of water. A 10.0 piece of iron (density = 7.86 ) and a 16.0 piece of lead are added. What is the new water level in the cylinder?
a 70g piece of ice at 0c is added to a sample of water at 6c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
at constant volume the temperature of a sample of sulfur dioxide gas is decreased from 97 oc to 27 oc.nbsp what was the
The equilibrium constant for thr hypothetical reaction below is Kp=0.113 at 25.0 oC. A2(g) + B2(g) 2AB(g) An experiment is carried out at 25oC with an initial mixture in which P(A2)=1.0atm and P{B2}=1.0atm. What is the equilibrium partial pressu..
A gaseous mixture containing 0.150 mol fraction of carbon tetrachloride (CCl4) and 0.850 mol fraction of dry air is initially at 65.0°C
The % ionization of a weak acid always declines in a solution that contains the salt of the anion relative to a solution of the acid alone. For example the % dissociation of the acetic acid is less in a solution that contains sodium acetate than i..
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 265.0 Torr at 45.0 °C. Calculate the value of ?H°vap for this liquid. Also, calculate the normal boiling point for this liquid.
A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740.0 torr and a temperature of 25.0°C.
Explain in gory detail the relationship between temperature and vapor pressure. Lots of pictures might be helpful. Why does water expand when it freezes?
A person uses 750 kcal on a long walk. Calculate the energy used for the walk in each of the following energy units
To determine its identity, 0.150g of the unknown was dissolved using 10.00ml, 0.531 M HCl. Three drops of methyl orange was added to the solution and then titrated with 0.2440 M NaOH.
Calculate the potential delivered by a voltaic cell operating by the following reaction if all of the dissolved species have a concentration of 0.035 and the pressure of H2 (g) is 1.00 atm.
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