Imagine that you have four food dyes to test, a, b, c and d. imagine that you are going to investigate which food dye diffuses most quickly. a, which variable will you change?
b, which variable will you measure? how will you do this? you can draw a diagram if it helps you to explain.

What happens to the atomic radius when an elctron is lost

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?