What is the molarity of the ethanol in this solution
A solution of ethanol (C2H5OH) in water is prepared by dissolving 77.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 275.0 mL of solution. What is the molarity of the ethanol in this solution?
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The rate constant k for a first order reaction is 1.36 * 10 -3 s -1 at 90 degrees Celcius and the activation energy is 78.4 kJ/mol. What is the rate constant for this reaction at 50 degrees Celcius?
Ultisols are an important soil order in this group of soils. Describe the typical profile of this soil order paying particular attention to features that directly influence soil and water management . Indicate how these features may influenceland
A sample of magnesium metal will combust completely in air according the following reaction:
A two element array of isotropic antennas to be used to get maximum radiation and a null in opposite directions along the array axis.find the required phase difference and the distance between the two sources?
At a certain instant the initial rate of the disappearance of oxygen gas is X. What is the value of the appearance of water at the same instant?
What amount of Potassium Chloride forms when 5.25 litres of Chloride gas at 0.95 atm and 293 K reacts with17.0 g of Potassium?
Consider a stable nocturnal boudary layer in a 12 hr night. The wind is blowing at 5 m/s and the surface is cooled with a kinematic heat flux of -0.02 K.m/s. The residual layer potential temperature is theta=25 degree centigrade.
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