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Aleksandr [31]
3 years ago
10

A scientist is observing elephants in Asia. He notices that a specific species of moth lands on the faces of the elephants. On c

loser observation, he sees that the moths irritate the eyes of the elephants and then drink the tears that emerge.
What scientific question could the scientist ask to explain this?

A.

Do other species of moths also drink elephant tears?

B.

What nutrients that moths need are in elephant tears?

C.

How can the moths be kept off the elephants' faces?

D.

all of these
Chemistry
2 answers:
Ber [7]3 years ago
7 0

Answer:

B

Explanation:

The scientific question that the scientist could ask to explain the observation is what nutrients that moths need are in the elephant tears? This question could be essential since there may be something present in the tears that is beneficial to the moth survival.

kolezko [41]3 years ago
4 0

Answer:

B: what nutrients that moths need are in the elephant tears?

Explanation:

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Answer: Option (d) is the correct answer.

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Electronegativity value of hydrogen is 2.2.

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Electronegativity value of carbon is 2.55.

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Electronegativity value of nitrogen is 3.04.

Electronegativity value of sodium is 0.93.

Electronegativity value of iodine is 2.66.

Therefore, calculate the electronegativity difference between the bonded atoms as follows.

  • Electronegativity difference of HCl = Electronegativity value of chlorine - electronegativity value of hydrogen

                                                          = 3.16 - 2.2

                                                          = 0.96

  • Electronegativity difference of CO = Electronegativity value of oxygen - electronegativity value of carbon

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                                                          = 0.89

  • Electronegativity difference of N_{2} = Electronegativity value of nitrogen - electronegativity value of nitrogen

                                                           = 3.04 - 3.04

                                                           = 0

  • Electronegativity difference of NaI = Electronegativity value of iodine - electronegativity value of sodium

                                                          = 2.66 - 0.93

                                                          = 1.73

So, we can see that highest electronegativity difference is 1.73 and it is shown by NaI molecule.

Thus, we can conclude that a group 1 alkali metal bonded to iodide, such as NaI has the greatest electronegativity difference between the bonded atoms.

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