Question 18

which of the following does not increase the rate of dissolving?

stirring

insulated container

temperature

surface area

I believe the answer would be insulated container.

The rate of dissolving decreases in B. Insulated container.

Solubility refers to the process at which a solvent gets completely dissolved in solution. It is a type of factor which paves way for speeding up of the mixing process. The factors such as stirring, temperature, surface area, polarity, molecular size, etc., has great influence upon the dissolving rate.  

When we stir a solution, it increases the dissolving rate of solute in solvent. Likewise when the temperature is increased, it also paves way for faster rate of dissolution. The surface area also acts as major factor for rate of dissolving because; when more area is available it leads to faster dissolving.  

Among the options given below, insulated container does not increase the rate of dissolving.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.