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4 years ago

Why do magnets have to face each other to attract

2 answers:

3 0

Magents have a North and South magnetic attraction and North and North don't attract South and south don't attract either . Only north and south attract which is when they are facing each other that's why they say opposites attract

Art [367]4 years ago

3 0

Because they have a negative and positive charge.

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Which phrase best describes how scientists use the data they collect

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Answer:

The correct answer is b

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3 years ago

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Chose one that best fits the question

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Answer:

Explanation:

The fourth one.

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3. You are asked to prepare an aqueous solution. What would be a better choice for a solute potassium nitrate or

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3 years ago

Which of the following is a product of aerobic respiration?

sasho [114]

Answer:

The product of aerobic respiration is Carbon dioxide.

Explanation:

The process of breaking down glucose to produce energy and waste products is called respiration. Livings beings need respiration process to generate energy so that they can survive.
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4 years ago

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A certain hydrocarbon has a molecular formula of C9H16. Which of the following is not a structural possibility for this hydrocar

snow_tiger [21]

Answer: Option (d) is the correct answer.

Explanation:

It is given that molecular formula is $C_{9}H_{16}$ . Now, we will calculate the degree of unsaturation as follows.

Degree of unsaturation = $C_{n} - \frac{\text{monovalent}}{2} + \frac{\text{trivalent}}{2} + 1$

= $9 - \frac{16}{2} + 1$

= 9 - 8 + 1

= 2

As the degree of unsaturation comes out to be 2. It means that this compound will contain one ring and one double bond.

Yes, this compound could be an alkyne as for alkyne D.B.E = 2.

But this compound cannot be a cycloalkane because for a cycloalkane D.B.E = 1 which is due to the ring only.

Thus, we can conclude that it is a cycloalkane is not a structural possibility for this hydrocarbon.

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4 years ago