Helium (he) and neon (ne) are elements in group 8a of the periodic table. how do the electron dot diagrams of these elements compare?
a. the electron dot diagram of helium has six fewer electrons than the electron dot diagram of neon.
b. the electron dot diagram of helium has eight fewer electrons than the electron dot diagram of neon.
c. both the electron dot diagram of helium and the electron dot diagram of neon have two dots.
d. both the electron dot diagram of helium and the electron dot diagram of neon have eight dots.

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved