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nikklg [1K]
3 years ago
8

The scientific theory of plate tectonics states that the Earth's crust is composed of many plates, or slabs of rock. Interaction

s of these plates have created different landforms, or geologic features. Which of the following statements provides evidence for this theory?
A.
A large earthquake off the coast of Japan induces a wave that is over twenty feet high.
B.
An iceberg buckles the hull of the Titanic and allows water to enter between the steel plates.
C.
The city of Pompeii is perfectly preserved under volcanic ash following the eruption of Mount Vesuvius.
D.
Fossilized marine creatures can be found at the top of the Himalayan Mountains.
Chemistry
1 answer:
jonny [76]3 years ago
4 0
The answer would be d
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What is the mass of 8.0 x 10^26 UF6 molecules?
gulaghasi [49]
First, find the number of moles of UF6
Avagadro's number = 6.023 x 10^23

Number of moles = 8.0 x 10^26 / Avagadro's number = 8.0 x 10^26 / 6.023 x 10^23 = 1.328 x 10³ moles

Molecular weight of UF6 = Molecular weight of U (238.02891) + Molecular weight of F6 (6 x 18.9984032) = 238.02891 + 113.9904192 = 352.0193292 g/mol

Therefore mass of 8.0 x 10^26 UF6 molecules = 352.0193292 g/mol x 1.328 x 10³ moles = 467.481669 x 10³ grams




3 0
3 years ago
8. Skin cancer is a disease that occurs when skin cells grow in an uncontrolled way. It can be caused by UV
Levart [38]

Answer:

Explanation:

I think none of the above, because when caused by a UV light it damages the cells. And if enough builds up overtime it causes uncontrollable growth and leads to skin cancer.

Hope that helped? It might be another answer honestly.

3 0
3 years ago
A blood pressure of 145 mm Hg is considered to be high and is generally a sign of hypertension. Determine what this pressure is
Illusion [34]

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19.3317 kilopascals

Explanation:

8 0
3 years ago
Lithium reacts spontaneously with bromine to produce lithium bromide. Write the balanced chemical equation for the reaction. (Us
Stels [109]
The reaction equation is:
Li + Br → LiBr

39 grams of Li = 39 / 7 = 5.57 moles of lithium
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3 0
3 years ago
Can anyone solve this please. I need this fastly
Natalka [10]

Answer:

Average atomic mass = 63.3896

Explanation:

Step 1: Find how much Cu-65 we have

1 - Amount of Cu-63 = Amount of Cu-65

1 - 0.6915 = Amount of Cu-65

Amount of Cu-65 = 0.305

Step 2: Find the average atomic mass of Cu

(0.6915 x 63) + (0.305 x 65) = <em>Average atomic mass</em>

(43.5645) + (19.825) = <em>Average atomic mass</em>

63.3895 = <em>Average atomic mass</em>

Therefore the average atomic mass of Cu is 63.3895 atomic mass units

4 0
3 years ago
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