Second question: given the chemical recation:

cu+2(aq) + 2cl-1(aq) --> cucl2 (s)

which of the following statements best defines the common ion effect?
a. when a chemical reaction has reached equilibrium and we add more of one of the ions that already exists in the solution, the forward reaction will proceed at a faster rate, and the equilibrium will be reestablished.
b. when a chemical reaction has reached equilibrium and we add more of one of the ions that already exists in the solution, the reverse reaction will proceed at a slower rate, and the equilibrium will be reestablished.
c. when a chemical reaction has reached equilibrium and we add more of one of the ions that already exists in the solution, the reverse reaction will proceed at a faster rate, and the equilibrium will not be reestablished.
d. when a chemical reaction has reached equilibrium and we add more of one of the ions that already exists in the solution, the reverse reaction will proceed at a faster rate, and the equilibrium will be reestablished.

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

Microtubular fibers that assist in the movement of chromosomes during nuclear division in conjunction with proteins, makes up the small and large organelle pieces that assemble prior to translation three-base nucleotide sequence that can complementarily pair with the functional transcript, allowing a particular material to be brought to a ribosome particular time in the cell cycle when the cell’s systems determine if the cellular conditions are appropriate to continue through the cycle time in the cell’s cycle when proteins are made and organelles are duplicated enzyme that allows proper nucleotide bonding during transcription specific dna sequence which will initiate gene transcription division of the cell’s cytoplasm specific bond that forms between two amino acids when a carboxyl group binds to a amino group three-base sequence that does not code for a particular amino acid a paired organelle which facilitates the formation of movement microtubules time in the cell’s cycle when the microtubular structures exert an equal pressure on the cell’s genetic material

2. how is heavy water different from normal water