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Water is pumped into a storage tank from a well delivering 15.0 gallons of water in 34.0 seconds through a pipe of 1.00 in.2 cross-sectional area. What is the average velocity of the water in the pipe as the water is pumped from the well?
A student carrried an experiment to prepare hydrogen in the labrotary, if the student collected 145.5ml of gas at a pressure of 750 mmHg and a temp of 25 degree celcius.
basketball with a volume of 3.50 liters is left in a car when the temperature is 298 k. what will the volume of the
what will be the osmotic pressure of a solution when 4.5 x 10-5 mol of a solute is dissolved in 152.0 ml of solution at
What is the characteristic of matter that causes it to expand when the temperature increases and contract when the temperature decreases?
What range of accelerating voltages would be required to cover the mass range between 16 and 625, for singly charged ions, if the field strength is held constant?
Write out and label the oxidation half-reaction and the reduction half-reaction. b)Combine your balanced half-reactions to show the balanced total reaction. c)What is the oxidizing agent. What is the reducing agent.
Which net ionic equation best represents the reaction (if a reaction occurs) between CaCO3 + HNO3 a. Ca2+ + 2NO3- ? Ca(NO3)2 b. CaCO3 + 2NO3- ? Ca(NO3)2 + CO32- c. CO32- + 2HNO3 ? H2O + CO2 + 2NO3- d. CaCO3 + 2H+ ? Ca2+ + H2O + CO2
Calculate the density of the sample. Show all work and use significant figures and units.
An indicator has a pKa of 5.7 . It is colorless in acid solution and deep green in alkaline solution.
In the photosynthesis reaction, how is the equilibrium yield of glucose(C6H12O6) affected( increaed, decreased, no change) by the following action water is added.
the solubility of o2g in water is 4.43 mg of o2100g h2o at 20oc and 1 atm pressure. what pressure of o2g would be
The first-order decomposition of S2O6(g) to form SO3(g), has a half-life of 1.262 x 10-3 s at 45oC. How long will it take for 40% of a 0.34 M sample to decompose at 45oC
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