It helps to make concentrated acid into dilute acid.
Answer from: Quest
since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.
2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.
How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?
Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?