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Amino acid compositions can be resolute by heating a protein in 6 M HCL also running the hydrolysate through an ion-exhange column. If you were departing to do an amino acid sequencing experiment, explain why want to get an amino acid composition first?
A voltaic cell consist of gold in a gold(III)nitrate solution and copper in a copper(II)nitrate electrode. Calculate cell potential if the [Au3+] is 0.00750M and [Cu2+]=1.50M at 25 degrees celsius.
A solution contains an unknown mass of dissolved silver ions. when potassium chloride is add to the solution.,a white precipitate forms.
The burning of a piece of paper in air (to produce CO2 and H2O vapor) is a spontanous reaction exothermic reaction. What would be necessary to start this reaction
a sample of hydrogen was collected over water at 23oc and an atmospheric pressure of 735 mmhg. what is the pressure of
When equilibrium is established, it is found that the partial pressure of ammonia has increase by 12.4%. Calculate K for the decomposition of NH4HS at 25 degrees C.
How many grams of Hcl will be produced from the reaction of 50.0mL of a 0.300M CaCl2 according to the reaction:CaCl2 + H3PO4(aq) ----> Ca3(PO4)2 (s) + HCl (aq)
What mass of CO2 is produced when 50.0 g of C2H4 reacts completely in the equation C2H4 + 3O2 = 2CO2 + 2H2O
question a bag contains ten counters of which six are red and four are green. a count is chosen at random its colour is
A sample of steam with a mass of 0.551 and at a temperature of 100 condenses into an insulated container holding 4.20 of water at 7.0. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture
A graduated cylinder contains 10.0ml of water. If the volume of a single water molecule is 2.99 x 10e-23 cm e3, how many molecules are in the graduated cylinder?
The second time, 1.3mL is added to reach the end point. How would I calculate the molarity of the hydroxide ion (OH-) for the two tests
An uncovered cup (1/2 pint) of trichloroethane (d=1.325 g/mL) is kept in an 18-ft3 refrigerator at 39 F. What percentage (by mass) of trichloroethane is left as a liquid when equilibrium is established
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