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Explain the geochemical differences between acidic mine waters and basic mine waters.
we use 1 g of unknown acid added with 120 mL of distilled water ,the solution filtered , then we took 25 mL of this unknown acid for titration. we use NaOH base for titration
the reaction n2g 3h2g lt--gt2nh3g is at equilibrium in areaction chamber. if an experimenter injects a small amount of
These electrons cause the emissions of secondary electrons-called auger electrons-from the metal surface. The kinetic energy of the auger electrons depends on the composition of the surface
If a temperature of a gas at 1.00atm and 8.00C is increased, resulting in a change of pressure, which equation would you use to calculate the new pressure.
In the reaction below, 1 atm of H2 and 6 atm of Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kp at 800 K is K = 36, calculate the equilibrium pressure of HCl.
The initial concentration of the reactant A in a first-order reaction is 1.2M. After 69.3 s, the concentration has fallen to 0.3M. What is the rate constant k
Define why you must have a liquid flowing back through the fractionating column in order to get the separation of the components during fractional distillation
How much work does a gas system do on its surroundings at a constant pressure of 1.00 atm if the volume of gas triples from 250.0 mL to 750.0 mL
Which of the following pairs of substances has the higher chemical potential (?) under the specified conditions? They may be equal. 1.) H2O (s) at -1 degrees Celsius and 1 bar, or H2O (s) at 1 degrees Celsius and 1 bar 2.) H2O (g) at 100 degrees C..
You need to dissolve CaCl2 in water to make a mixture that is 41.0% calcium chloride by mass. If the total mass of the mixture is 363.9g what masses of CaCl2 and water should be used
After 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32 ?
what is the pH of a Tris buffer (pka 8.1) prepared by adding 20 mL of 1M HCl to 100mL of a solution of 0.3M Tris
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