Which of the following is an oxidation-reduction reaction?
zns(s) + 2o2(> znso4(s)
cao(s) + h2o(l) > ca(oh)2(s)
6li2o(s) + p4o10(g) > 4li3po4(s)
so2(g) + h2o(l) > h2so3(aq)

Explanation:

The reaction is called redox reaction if there is oxidation and reduction in the reaction.

Oxidation is gain of oxygen, loss of hydrogen or loss of electrons.

Reduction is gain of hydrogen, loss of oxygen or gain of electrons.

a)

Here Zn is undergoing oxidation and oxygen is undergoing reduction. so it is an oxidation reduction reaction

b) In second reaction , the oxidation state of all elements remained the same. hence no oxidation reduction occur.

c) in third reaction also, the oxidation state of all elements remained the same. hence no oxidation reduction occur.

d) in fourth reaction also,the oxidation state of all elements remained the same. hence no oxidation reduction occur.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

i'm wiling to try and you : )