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When a 6.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 2.294 kJ·K-1, the temperature decreases by 0.470 K. Calculate the molar heat of solution of KCN.
the balanced net ionic equation for the reaction that takes place in aqueous solution between hydrogen peroxide and potassium iodide to make potassium hydroxide and molecular iodine.
how do you find the empirical formula of a compound if they don't give you percentages. For example, if they ask: what is the empirical formula for N2O4?
Hydrogen and oxygen gas combine explosively to produce water. Write a balanced chemical equation for this process. If 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced?
What wavelength (in s-1) of light would be required to change the vibrational number from n=0 to n=4, assuming O-H acts as a harmonic oscillator?
a 25 mL sample of .150 M hypochlorous acid is titrated with a .15 M NaOH solution. What is the pH after 26 mL of base is added? The Ka of hypochlorous acid is 3.0x10^8
Physical propoerties and intermolecular forces, What type of intermolecular forces accounts for the following differences in each case?
What is the chemical balance equation and what causes the color and precipitation?
Write the balanced reaction for the complete combustion f octane (C8H18) and then determine how many moles of oxygen it would require to burn 240.00 moles of octane? 2 350.00 grams of octane?
The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g°C) and the heat capacity of the empty calorimeter is 0.10 kJ/°C. How much heat is released per gram of oil shale when it is burned?
Calculate the mass of propylene glycol that must be added to 0.330 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
The temperature of 1.5 kg of ethanol is 37°C. What will the final temperature be if 80,000 J of energy as heat is added to the ethanol.
A solution of I2 was standardized with ascorbic acid. Using a 0.1000-g sample of pure ascorbic acid, 23.52 mL of I2 were required to reach the starch end point.
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