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Mila [183]
3 years ago
5

In a water molecule, the Oxygen has a ____________ charge and the hydrogens have a ____________ charge.

Biology
1 answer:
Contact [7]3 years ago
3 0

Answer:    A. Negative, positive

Explanation:  The water formula is known as H₂O, where according to the formula, two hydrogen atoms are bonded to one oxygen atom. The oxygen charge is -2, because it belongs to the group of atoms with valence number six. This means that oxygen has six valence electrons and it needs two more electrons to have eight and become neutral. Therefore, it has a negative charge of -2, and in the water molecule binds two hydrogen atoms, each with a charge of +1. Thus, by binding two positive hydrogen atoms, the total water molecule is stable.

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Suppose the North American plate is moving away from the Eurasian plate at a rate of 2 cm per year. The eastern-most point of No
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The correct answer is - 1,180 km.

North America and Europe move away from one another, though the two plates, the North American and Eurasian are merging together on the other side. Since the rate of moving away is 2 cm per year, and the current distance is 1,184 km between North America and Europe, the distance between them 200,000 years ago was 1,180 km.

To get to the result we only need to multiply the number of years with the annual movement

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Than divide the result with 100,000, as that is how much cm are in one km

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