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From the data that we gathered from the laboratory using PAR 6755, the head of solution for sodium chloride is negative. But according to the internet, the heat of solution is positive. Why is that?
the brown gas no2 and the colorless gas n2o4 exist in equilibrium. in an experiment 0.625 mole of n2o4 was introduced
What are the conductance cell and the cell constant. Describe experimental method for the determination of the cell constant.
in a saturated solution of mgf2 at 18c the concentration of mg2 is 1.21 x 10-3 molar. the equilibrium is represented
Propanoic acid has Ka of 1.4x10^-5. If we make a solution 0.100M propanoic acid, what concentration of sodium propanoate should be added to give a buffer with a pH of 5.0?
What volume in ml of 0.0293 M Ba(OH)2 is required to neutralize 25.00 ml of 2.00 M HN03
calculate the final molarity of barium cation in the solution
In the first 12.0 s of the reaction, 1.8×10-2 moles of O2 is produced in a reaction vessel with a volume of 0.260 L. What is the average rate of the reaction over this time interval?
Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision
Hydrogen and oxygen react in a 1:8 mass ratio to form the compound H2O. Using the law of definite proportions, determine how many grams of hydrogen will react completely
State the balanced net equations for the reactions that take place when 0.1 M solutions of cadmium(II) nitrate and ammonium carbonate are mixed, when 0.1 M solutions of potassium hydroxide and iron(III) acetate are mixed, and while 0.1 M solutions..
the element europium exists in nature as two isotopes eu-151 has a mass of 150.9209 amu and eu-153 has a mass of
Describe the error that has occured; that is , is the mass of the anhydrous salt remaining in the crucible reported as being too high or low? Explain.
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