Calculate delta h of the reaction
When 24.4 mL of 0.500M H2SO4 is added to 24.4ml of 1.00M KOH in a coffee cup calorimeter at 23.5 degrees Celcius, the temperature rises to 30.17 degrees celcius. Calculate delta H of this reaction (kJ/mol H2SO4).
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A man pulls a crate of mass 71.0 kg across a level floor. He pulls with a force of 178.0 N at an angle of 27.0° above the horizontal. When the crate is moving, the frictional force between the floor and the crate has a magnitude of 122.0 N. If
A convex lens is held over a piece of paper outdoors on a sunny day. When the paper is held 20 cm below the lens, the sunlight is focused on the paper and the paper ignites. What is the focal length of the lens?
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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 2.156 kJ·K-1, the temperature decreases by 0.500 K. Calculate the molar heat of solution of KCN.
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