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Why is it some of our experiments on the Dische Reaction yielded a purple solution for the deoxyribose standard solution while the DNA hydrolyzate yielded a colorless or even light green solution? What are the possible causes of these?
Calculate the volume in mL of 1,00g of water at each temperature and then calculate the percentage increase in volume that occurs as water is heated from 4.0 degrees Celsius to 60.0 degrees Celsius.
A single beam photometer with a linear response showed a detector signal of 73.6 uA for a blank solution. Replacing the blank with the sample solution yielded a signal of 24.9 uA. What is the transmittance expected for a sample solution of twice t..
The volume of a sample of chlorine gas is 98.6 mL at 31.4 C and 769.6 mmHg. What volume will the sample occupy at 23.2 C and 748.8 mmHg? Please show how to work out the problem if you can
Problem- The solubility of CuCO3 is measured and found to be 1.88E-3 g/L. Use this information to calculate a Ksp value for copper(II) carbonate.
why do we need to excess FCR? Also give 3 reasons why gallic acid is used as standard for the total phenolic assay?
a very important material assembly approach based onbiomolecular recognition is provided by use of a pair of
Shift equilibrium toward reactants. You will have to write out reaction quotients for before as well as after the dilution.
A 265- flask contains pure helium at a pressure of 760 . A second flask with a volume of 495 contains pure argon at a pressure of 729. If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of h..
Rubidium chloride adopts the rock salt structure. Compute the radius of the rubidium ion if the density of RbCl is 2.76g/cm3 as well as it is assumed that the ions touch along the edges of the unit cell.
4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 5.86 moles of CO2 react completely?
Calculate the initial concentration of iodide ion after the solutions in tubes A and B are mixed (before the reaction begins).
115 grams of KCl is dissolved in 750mL of water (assume density=1.005g/mL). What are the molality, molarity, mole fraction, mole percent, % mass, ppm by mass
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