Please help Which of the following reactions is an example of a double displacement reaction?
Select one:
a. NaCN + HBr --> NaBr + HCN
b. K + Cl2 --> KCl
c. C6H14 + O2 --> CO2 + H2O
d. H2O2 --> H2O + O2

2) Which of the following reactions is an example of a double displacement reaction?
Select one:
a. CH4 + O2 --> CO2 + H2O
b. Na2S + HCl --> NaCl + H2S
c. KClO3 --> KCl + O2
d. Fe + S8 --> FeS

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

Answer asap need to be answered 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.