The same amount of substance was added to four beakers of water. the treatments were placed in the chart. which best describes the solutions? a: solutions x and z have greater solubility than solutions w and y. b: solutions y and z have greater solubility than solutions w and x. c: solutions w and y have greater solubility than solutions x and z. d: solutions w and z have greater solubility than solutions x and y.

C: Solutions W and Y have greater solubility than solutions X and Z.

Explanation:

Temperature and pressure affect the solubility of a solution as follows:

- the higher the pressure, the greater the solubility (because more pressure means more collisions between the molecules, so this improves the solubility)

- the higher the temperature, the greater the solubility (because higher temperature means higher kinetic energy of the molecules, so more collisions, and so this improves the solubility)

Therefore, considering these two factors, the solutions with greater solubility must be W (which has high pressure) and Y (which has high temperature).

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).