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dybincka [34]
4 years ago
14

Olivia became interested in the fossil evidence that Wegener used to form his hypothesis of continental drift. How did fossils s

how that the continents were once joined together?
A. Animal fossils such as the mesosaurus were found on one continent.
B. Scientists found examples of different kinds of fossils on some continents.
C. Plant fossils of the same kind of fernlike plants were found on five continents.
D. Freshwater animal fossils were found in the nearby oceans.
Chemistry
1 answer:
tangare [24]4 years ago
8 0

Answer:

C.Plant fossils of the same kind of fernlike plants were found on five continents

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Is the sulfide ion (S2-) stable, neutral or both? Explan
emmainna [20.7K]

The stable ion the sulfur would form is the sulfide ion,
S
2
−
.
Explanation:
A neutral sulfur atom contains 16 electrons. We can know this because its atomic number is 16, which means there are 16 protons in the nucleus. Since the negative charge of the electrons cancels the charge of the protons, the sulfur atom is neutral. The electron configuration of sulfur is
1s
2
2s
2
2p
6
3s
2
3p
4
. The valence shell (the 3s and 3p sublevels) contains six electrons, but it needs eight to become stable. Think of the octet rule. Therefore a sulfur atom will gain two electrons to form the sulfide anion with a charge of
2
−
, with the symbol
S
2
−
.hope this helps
6 0
3 years ago
Please hurry this is due tomorrow morning
Llana [10]
Answer: G Atom 1 and Atom 4.. hope this helps and good luck!
3 0
3 years ago
What is 7% as a decimal?
Colt1911 [192]
.07! you divide 7 by 100%


6 0
4 years ago
If State A is heated, which of the other two states would it more closely resemble? Explain.
Art [367]
We need more information on this question.
8 0
3 years ago
Two of the types of ultraviolet light, UVB and UVC, are both components of sunlight. Their wavelengths range from 280 to 320 nm
Dvinal [7]

Answer:

UVC > UVB > microwaves

Explanation:

Let's consider the following radiations with their ranges of wavelengths (λ).

  • Microwaves: 1 mm - 1 m
  • UVB: 280 nm - 320 nm
  • UVC: 100 nm - 280 nm

The energy of a photon (E) can be calculated using the Planck-Einstein's equation.

E = h . c . λ⁻¹

where,

h is the Planck's constant

c is the speed of light

As we can see, <u>the shorter the wavelength, the more energy the photon has</u>. The rank from greatest to least energy is UVC > UVB > microwaves.

4 0
3 years ago
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