Which one of the following is a redox reaction? . 2 na(g) + cl2(g) 2 nacl(s) a. k2cr2o7(aq) + 2 koh(aq) 2 k2cro4(aq) + h2o(l) b. h2o(l) h+(aq) + oh -(aq) c. na2co3(s) + 2 hcl(aq) 2 nacl(aq) + co2(g) + h2o(l) d. ba2+(aq) + so42-(aq) baso4(s)

Option (a) is the correct answer.

Explanation:

A redox reaction is defined as a reaction in which there occurs a change in oxidation state of the reacting species.

For example,

Here, oxidation state of sodium is changing from 0 to +1 and oxidation state of chlorine is changing from 0 to -1.

Therefore, this change in oxidation state of the reactants depicts a redox reaction has occurred.

Thus, we can conclude that out of the given options is a redox reaction.

no, i was listening to water by schoolboy q while and i saw this question

explenation:

water isn't wet. wetness is a description of our experience of water; what happens to us when we come into contact with water in such a way that it impinges on our state of being. we, or our possessions, 'get wet'. a less impinging sense experience of water is that it is cold or warm, while visual experience tells us that it is green or blue or muddy or fast-flowing. we learn by experience that a sensation of wetness is associated with water: 'there must be a leak/i must have sat in something.'

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).