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When conducting an experiment to determine what effect the temperature of water has on the solubility of sugar, what variable(s) should remain constant?

I. The amount of water used.
II. The temperature of the water.
III. The type of sugar used.
IV. The surface area of the sugar.
V. The agitation applied to the solution.

A. I, III, IV, and V
B. All of these
C. I and III only
D. II only

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

Iwill give 30 points to whoever answers ! what is the formula for actual mechanical advantage and ideal mechanical advantage?

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)