Chemistry, 12.08.2019 23:20 zionlopez543
In water conservation, chemists spread a thin film of a certain inert material over the surface of water to cut down on the rate of evaporation of water in reservoirs. this technique was pioneered by benjamin franklin three centuries ago. franklin found that 0.10 ml of oil could spread over the surface of water about 40 m^2 in area. assuming that the oil forms a monolayer, that is, a layer that is only one molecule thick, estimate the length of each oil molecule in nanometers (1nm= 1 x 10^-9 m).
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How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles
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What is the value of the standard enthalpy of formation of an element in its most stable form?
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To calculate the molarity of a solution, you need to know the moles of solute and the
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A0.100-kilogram apple hangs in a tree 1.50 meter above the ground. ignore frictional effects, the total mechanical energy of the apples is
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In water conservation, chemists spread a thin film of a certain inert material over the surface of w...
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