A student designed an experiment to test the affect of salt on the number of plants that
live in water. What is the dependent variable
in this experiment
A. The water
B. Water temperature
C. The number of plants living in the water
D. The amount of salt in the water

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397