Question 26 point) There's a sharp difference of opinion among scientists about global warming and the risks it may pose. A few scientists say that global
warming is not a serious issue. Other scientists feel that rising levels of carbon dioxide could trigger a sharp change in the Earth's climate
Based on the opinion of scientists it may be concluded that (1 point)
O a
there is only one proven risk of global warming
Db
there are several new ideas about the risks of global warming
all scientists give invalid opinions about the risks of global warming,
no scientist can give a valid opinion about the risks of global warming

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.