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Calculate the pH of 100 mL of .30 M NH3 before and after the addition of 4.0 g of NH4NO3 and account for the change. assume the volume remains constant
A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.719 V. If the silver-silver chloride electrode is replaced with a saturated calome..
Calculate H in kJ/mol KClO3 for the solution process. KClO3(s) K+(aq) + ClO3-(aq) The specific heat of water is 4.18 J/g-K.
if you start with 5.5 grams of lithium chloride, how many grams of calcium chloride will be produced? mg+2naf=mgf2+2na
If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C
How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution.
What is the atomic mass of Tc as it would appear in the periodic table. Do not enter units with your answer and use the correct number of significant figures.
Dry ice sublimes at room temp. If 10.0 g of solid dry ice is placed in a 400 mL container, what will be the pressure in the container at 35 degrees C
Glycerol, C3H8O3, is a water-soluble liquid of density 1.2656 g/ml at 15oC. Calculate the molarity of a solution of glycerol made by dissolving 40.000 ml glycerol at 15oC in enough water to make 250.000 ml of solution.
why is the Lineweaver Burke plot superior to the Michaelis- Menton plot for calculation enzyme kinetic values
It is 2734 mi between Phoenix, Arizona, and Philidelphia, Pennsylvania. What is this distance in km?
A mixture of 70 mole% butane and 30 mole % hyrdrogen is burned with excess air. Fractional conversion of 85% of the butane and 90% of the hydrogen are achieved
Suppose that you carry out an analytical procedure to generate a linear calibration curve like that shown in the figure below. Then you analyze an unknown and find an absorbance that gives a negative concentration for the analyte Select the true s..
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