What characteristic do the elements in group 1 share? they tend to lose one electron to become a 1+ ion. they tend to gain one electron to become a 1- ion they gain one proton to achieve a stable nucleus. they share electrons with a metal in a covalent bond.

Which position represents spring in the southern hemisphere? a) b) c) d)

What must occur for air masses to form fronts

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.