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meriva
2 years ago
13

Which of the following is true of science? (2 points)

Chemistry
1 answer:
Tju [1.3M]2 years ago
7 0

Answer:

It is based on testable and replicable evidence.

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An element's atomic number is 86. how many protons would an atom of this element have?
rusak2 [61]
The number of protons an element has is the same as the atomic number, so the element would have 86 protons.
8 0
3 years ago
What animal is most like to harmed when a beaver builds a dam​
siniylev [52]

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Small fish or insects.

Explanation:

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Which element is most plentiful in Earth's crust?
dem82 [27]

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Oxygen is the most contain in earth but you asked in a,b,c and d. So I'll choice A. aluminium.

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3 years ago
According to the oxygen-hemoglobin dissociation curve, PO2 in the lungs of 100 mm Hg results in Hb being 98% saturated. At high
Ad libitum [116K]

Answer:

Hb would be 78.4% saturated.

Explanation:

This problem can be solved by using simple unitary method.

At 100 mm Hg pressure of oxygen, Hb is saturated by 98%

So, at 1 mm Hg pressure of oxygen, Hb is saturated by \frac{98}{100}%

Hence, at 80 mm Hg pressure of oxygen, Hb is saturated by \frac{98\times 80}{100}% or 78.4%

Therefore, at 80 mm Hg pressure of oxygen in the lungs, Hb would be 78.4% saturated.

4 0
3 years ago
Which of the two forces is greater the force on the firefly or the force on the bus explain your answer please I really need hel
maksim [4K]

Answer: The force on the firefly

The unfortunate firefly hitting the bus does not change the velocity of the bus very much. Technically there is a change, but it's so very small and miniscule that it barely registers. To any casual observer not paying very close attention, they don't notice anything at all. So effectively the force on the firefly is a lot greater since the firefly got the worst end of the deal.

So in short, we look at the velocity of each object and see which velocity changed the most. In this case, the firefly's velocity changed from whatever speed it was flying to 0 when it stops flying all together. That's why the force is greater on the bug.

8 0
3 years ago
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