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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

d) the number of neutrons plus the number of protons

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid