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We utilized the spectrophotometer to measure the values of OD absorbtion of proteins left over from the iron exchange column chromatohraphy. According to the lab protocal the cuvettes with the heighest OD values contains the most proteins why is that?
A series RL circuit has a resistance of 50 Ohms and an inductance of 140 mH and is driven by a 120-V, 60-Hz source.
on't 2 and 3 have multiple answers? I think I'm only supposed to have one, though? How do you differentiate using the water solubility chart?
Observe significant figure rules. Constants: ideal gas const = R = 0.08206 L atm/mole K; 1 mole of gas at STP occupies 22.41 L. Atomic masses: H 1.008 O 16.000 g/mole. You must show work to identify the limiting reagent; no credit for guessing.
A sample of gas is collected over water at c and mm Hg. The collected gas occupies 130 mL. The vapor pressure of water at 23.5 c is 21.7 mm Hg. The approximate molecular weight of this gas
What is the maximum wavelength of light capable of doing this? 574 nm Check the number of significant figures.
A gaseous fuel mixture stored at 749 and 298 contains only methane (CH_4) and propane (C_3H_8) . When 11.3 of this fuel mixture is burned, it produces 776 of heat. What is the mole fraction of methane in the mixture
write the net ionic equations for the reactions involved in the testing of each of the following anions
Calculate the mass of sugar and salt in the original mixture. The other answer posted to the other time this questionw as posted seems to be incorrect.
The initial pH. the volume of added base required to reach the equivalence point the pH at 12.0 mL of added base
Calculate the pH of a buffer solution made by mixing 34.2 g of sodium acetate into 1 L of a 0.09 M solution of acetic acid. Give the pH to two decimal places.
a gaseous mixture of and contains 36.8 nitrogen by mass. what is the partial pressure of oxygen in the mixture if the
The pKa values of a compound with two ionizable groups are pKa1 = 4.10 and pKa2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compoud at a pH of 8.00. She adds 10.0 mL of 1.00 M HCl,
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