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Explain In the laboratory a student combines 25.5mL of a 0.203 M sodium nitrate solution with 24.3mL of 0.375 M manganese (II) nitrate solution.
Define what is the final concentration of nitrate anion?
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
If Kp = 0.032 at this temperature, what will be the equilibrium overall pressure starting from pure CaSO4(s)?
phytane is a naturally occurring alkane produced by the alga spirogyra and is a constituent of petroleum. the iupac
Explain when 225 ml of H2O at 25 C are mixed with 85 ml of water at 89 C, Explain what the final temperature is Presume that no heat is lost to the surroundings d of H20 = 1.00 g/ml
What is the total number of joules absorbed by 65.0 g of water when the temperature of the water is raised from 25.0 degrees celsius to 40 degrees celsius?
The rate at which a compound travels through a particular GC system depends on numerous factors. List the five factors and number them one through five.
Assuming that at low pH the principle species in solution is HA and at high pH the principle species is A-, calculate the pKa of the indicator.
Equal quantities of 0.010M solutions of an acid HA and a base B are mixed. The pH of the resulting solution is 9.2. Write the equilibrium equation for the reaction between HA and B.
Metallic magnesium can be made by the electrolysis of molten MgCl2. What mass of Mg is formed by passing a current of 6.40 A through molten MgCl2 for 4.90 days?
When 10.0 g of NH3 reacts, the actual yield of N2 is 8.50 g. What is the percent yield?
Drinking water is often cooled by evaporation from the surface of a cloth bag or clay pot. the heat cap of water 4.18 j/g C and >> delta heat vaporation = 40.67 kj/mol if tha heat capacity of the container is negligible
What is the de Broglie wavelength in cm, of a 12.9 g hummingbird flying at 1.14 102 mph? (1 mile = 1.61 km.)
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