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Compute the concentration of a solution prepared by adding up enough water to 2.3 g of sucrose (C12H22O11) to make a total of 80 mL of solution.
what it is perscribed for 3.Mechanism of action( for example: how it binds to biological molecules, how it may inhibit enzyme activity.)
What's the volume of pure hydrogen present in a sample of 55.0 mL of gas saturated with water vapour at 27 °C, if the total pressure is 104.8 kPa?
The two new DNA molecules formed in replication. The nucleotides in the backbone of DNA are held together by bonds.
Titration of the lead and zinc in this aliquot required 34.06 mL of the EDTA solution. Finally, cyanide was used to mask the copper and the zinc in a 25.00 mL aliquot. Titration of the lead required 26.68 mL of the EDTA solution. Determine the com..
When doing a recrystallization, why is it important to allow the saturated solution to boil for ~1 minute and cool SLOWLY to room temperature before placing it in an ice-water bath?
Explain how you would prepare 500 mL of 2.0 molar stock Tris solution and 500 mL of 0.5 molar EDTA solution. Also explain how you would take your stock solutions and prepare a 100 mL Tris-EDTA buffer (TE buffer) that has a final concentration of 1..
A sample of naphthalene,which should be pure white, was found to have a grayish color after the usual purification procedure. The melting point was correct and the melting point range small. Explain the gray color.
the simplest formula of a substance is found to be ch2o and its approximate molar mass is found by experiment to be
Given the following thermochemical equation: NO(g) + O3(g) ---> NO2(g) + O2(g) delta H= -198.9 KJ/mol O3(g) ----> 3/2 O2(g) delta H= -142.3 KJ/mol O2(g) ----> 2O(g) delta H= +495 KJ/mol determine the enthalpy change for the reaction: 2NO2(g) ---->..
A 2.78 L sample of hydrogen chloride (HCl) gas at 2.61 atm and 28°C is completely dissolved in 651 mL of water to form hydrochloric acid solution. Calculate the molarity of the acid solution. Assume no change in volume.
What is the concentration ratio of CO2 (usually written as H2CO3) to HCO3- in blood at pH = 7.40. (carbonic acid Ka1 = 4.3 x 10-7)
What are the maximun number of electrons when n=4; n=5, ml=1; n=5, ms=+1/2; n=3, l=2; n=2, l=1. Please show all work.
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