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the following amino acids are placed in an electric field between positive and negative poles. which will migrate the fastest toward the positive end of the electric field?
a. alanine at a pH of 11.0
b. alanine at a pH of 7.0
c. histidine at a pH of 8.0
d. alanine at a pH of 1.0
e. glutamine at a pH of 1.0
Write the standard line notation for each cell below. Assume all concentrations are 1.0 M and all partial pressures are 1.0 atm. IO3-(aq) + Fe2+(aq) --> Fe3+(aq) + I2(aq)
If 88 J of heat are added to a pure gold coin with a mass of 20 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g'C
what is the wavelength in meters of a proton traveling at 2.70X10^8 m/s? (assume the mass of the proton to be 1.673X10^-27 kg)
Gurmt wanted to perform Activity 16.8 using a laser torch. Her teacher advised her not to do so
What is the minimum flow rate of water (? = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3? What is the mole fraction of NH3 in the scrubbed waste gas stream?
the osmotic pressure of the solution at 25C is found to be 0.614 mbar. Calculate the molecular mass of immunoglobulin G.
From the same container under the same conditions--same temperature and initial pressure, it takes 385 s for 7.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.
why do we need to excess FCR? Also give 3 reasons why gallic acid is used as standard for the total phenolic assay?
would bromine be a more or less effective disinfectant and bleaching agent than chlorine
A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 6.90kg of water at 34.7 degrees C . During the reaction 57.1kJ of heat flows out of the bath and into the flask.
The water level in a graduated cylinder initially at 216 rises to 287 after a piece of lead is submerged. What is the mass in grams of the lead?
solid carbon dioxide sublimes at a rate of 0.726 g/minute. How many gaseous carbon dioxide molecules are present after 5.00 minutes
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