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Water is to be pumped from a lake to a tank uphill that is open to the atmoshpere. The flow rate of water is 10 liters per minute and the flow channel is 10 cm^2 in area. A pump capable of delivering 8 hp = (Work) is availible. the friction loss F (KJ/s) equals 0.5 L, where L is the length of the pipe in meters. Calculate the maximum elevation z of the ranger station if the pipe rises at an angle of 30 degrees.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 72.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this solution?
What would be more stable, 1,1-dimethylcyclopropane or cis-1,2-dimethylcyclopropane or trans- 1,2-dimethylcyclopropane
Draw the molecule by placing atoms on the grid and connecting them with bonds. If there is more than one answer, draw all o
The "air bags" in automobiles contain sodium azide, NaN3, which decomposes when activated by an electronic igniter to produce nitrogen gas that fills the bag.
Calculate the pH during the titration of 25.1 mL of 0.565 M dimethylamine, (CH3)2NH with 0.170 M HCl after 14.2 mL of the acid have been added. Kb of dimethylamine = 5.4 x 10-4.
A voltaic cell is based on the reaction Sn(s)+ I2 (s) --> Sn^2+ (aq)+ 2I^- (aq). Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 70.0 g of Sn is consumed?
What are some of the characteristics that we want to observe? What might be your initial hypothesis? How would you set up an experiment to test your hypothesis?
a sample of he gas has a volume of 900 ml and a pressure 2.50 atm at 298 k. what is the new? pressure when the
The volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the new pressure in kpa if the temperature is held constant
Explain the general idea of the LCAO-MO method.
A sample of nitrogen gas in a 4.7-L container at a temperature of 28°C exerts a pressure of 3.6 atm. Calculate the number of moles of gas in the sample.
Adenosine monophosphate (AMP) is a regulatory molecule in metabolic processes such as glycolysis and gluconeogenesis. For example, it stimulates the glycolytic enzyme phosphofructokinase, and therefore ATP production, and it inhibits the gluconeog..
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