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Feliz [49]
3 years ago
5

How are extensive rocks formed?​

Chemistry
2 answers:
Inessa [10]3 years ago
7 0
Igneous rocks form when magma (molten rock) cools and crystallizes, either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust. All magma develops underground, in the lower crust or upper mantle, because of the intense heat there.
jolli1 [7]3 years ago
6 0

Answer:

Extrusive or igneous rocks form when magma/lava make it way on the earth's surface.

hope it helps!

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A woolly rhinocerous skeleton (Coelodonta antiquitatis) found in Poland contains 1.30% of the C-14 found in living animals. How
krok68 [10]

Answer:

The organism died 35900 years ago

Explanation:

  • Half life C-14 is 5730 years.
  • For decay of radioactive nuclides: \frac{N}{N_{0}}=(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}
  • \frac{N}{N_{0}} is the fraction of radioactive nuclide remain present after t time and t_{\frac{1}{2}} is the half-life of radioactive nuclide
  • Here \frac{N}{N_{0}} is 0.013 and t_{\frac{1}{2}} is 5730 yeras

Plug-in all the values in the above equation:

0.013=(\frac{1}{2})^{\frac{t}{5730years}}

So, t = 35900 years

Hence the organism died 35900 years ago

4 0
3 years ago
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AlladinOne [14]

Answer:

B. single replacement

Explanation:

5 0
4 years ago
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Which subatomic particle has negligible mass and travels around outside the nucleus?
likoan [24]
 <span>Electron because it is incredibly small. like 1840 times smaller than the proton. and it travels around the proton. The nucleus is made of proton and neutron and electron travels around it.</span>
4 0
3 years ago
if a magnet is broken which one of the following remains unchanged in each part mass, magnetisation, length
Aleks [24]

Explanation:

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coz it will still have two pols that is north and south pole

8 0
3 years ago
Please help me with this!
Nadya [2.5K]

Answer:

10. F

11. A

12. B

13. C

14. G

15. A

16. F

17. B

18. D

19. E

20. B

Explanation:

im sorry

ik some are probably incorrect

5 0
3 years ago
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