What is the molarity of the ethanol in the solution
A solution of ethanol (C2H5OH) in water is prepared by dissolving 60.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 235.0 mL of solution. What is the molarity of the ethanol in this solution?
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Some ice cubes at 0 degrees C with a total mass of 379g are placed in a microwave oven and subjected to 750. W (750. J/s)of energy for 5.00 minutes. (Assume all energy of the microwave is absorbed by the water and no heat loss by the water.)What i
Although the buoy normally floats on the surface, at certain times the water depth increases so that the buoy is completely immersed as illustrated.
A 55.0- mL sample of this glucose solution was diluted to 0.500. How many grams of glucose are in 100. of the final solution?
A hot tub is filled with 460 gallons of water, which has a density of 1.0 . What is the volume of water in the tub, in liters? What is the mass, in kilograms, of water it contains?How many kilocalories are needed to heat the water from 63 to 108?
A 0.0490 molal aqueous NaBr solution freezes at -0.173°C. What is its apparent percent dissociation in this solution? Kf = 1.86°C/m for water.
A standard steel specimen of 13 mm diameter elongated 22 mm when it was subjected to a tensile force of 29.5 kN if the specimen has a length of 200 mm and that force applied within elastic range. what is the elastic modulus of elasticity ?
Suppose the FCC allocates 300 kHz channels for a high quality video conference service. A service provider decides that this service requires 720 kbps (not including overhead and error control) for each channel.Specify a modulation format (other
If a raindrop weighs 60. mg on average and 5.1 105 raindrops fall on a lawn every minute, what mass (in kg) of rain falls on the lawn in 2.6 h?
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