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A beaker with 105 of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 . A student adds 6.40 of a 0.340 solution to the beaker. How much will the pH change? The of acetic acid is 4.760.
Oleic acid has one double bond and a molar mass of 282.45 g/mol. If iodine number is equal to the number of grams of Iodine (1) that combines with 100 grams of a fat or oil substance; calculte the iodine number for Oleic acid.
Calculate the values of vmax and Km for the reaction. c) How much of a noncompetitive inhibitor must be added to yield 90% inhibition? The degree of inhibition, i, is calculated by i% = (1-?) 100%, where ? = (vo)inhibition/ vo Assume KI = 2.9 x 1..
determine the most important part in chemical bond formation, coulomb, J, or the Exchange, K, term. What is the interpretation of this key result
Calculate the work, w, and energy change, ?Urxn, when 20.51 g of Cu2O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25°C.
If the following elements (Ca,V,Mn,Ni,Zn) were listed from smallest (1st) to largest (5th) ionization energy, where would Calcium be listed
a solution of 2.50g of a compound having the empirical formula c6h5p in 25.0 g of benzene is observed to freeze at
1. how many grams of potassium chloridekcl are needed to prepare.750 l of a 1.50 m solution of potassium chloride in
1. Describe the method you would use to seperate a mixture of water(boiling point=100) can be seperated from ethanol(boiling point= 60c)
B2H6 + 3O2= B2O3+3H2O ; delta H=-2035 KJ how much heat is released when a mixture of 7.35 g B2H6 and 2.60 g O2 is burned?
How many moles of NaOH must be added to 1.0 L of 1.2 M HC2H3O2 to produce a solution buffered at each pH? a) pH=3.87 b) pH=5.24
The specific gravity of our calcium chloride solution is 1.33 when processed. The volume in Tank One is 4,250 gallons of processed calcium chloride at 32% pure CaCl2. Water is 8.34 pounds/gallon.
Synthesized a new compound one which has never beenprepared. How would you determine its mp? What precautions could take to insure that it is as accurate as possible?
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