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nordsb [41]
3 years ago
10

Check the boxes next to events or trends that first occurred in science from about 1700. Darwin published his theory of natural

selection. Archimedes described the principle of the lever. Scientific societies and academies were formed. The double-helix structure of DNA was determined. Copernicus proposed a Sun-centered universe. Continental drift was explained by the theory of plate tectonics. The Earth was proven to be spherical.
Chemistry
2 answers:
pantera1 [17]3 years ago
8 0

Darwin published his theory of natural selection

Scientific societies and academies were formed.

The double-helix structure of DNA was determined.

Continental drift was explained by the theory of plate tectonics

got it right

marishachu [46]3 years ago
4 0

Check the boxes next to events or trends that first occurred in science from about 1700.

X Darwin published his theory of natural selection.

-Darwin published his work in 1859.

X Archimedes described the principle of the lever.

-Archimedes discovered this during the third century BC (300-201 BC)

/ Scientific societies and academies were formed.

-These were formed around 1789

X The double-helix structure of DNA was determined.

<span> -IT was discovered in 1953 by James Watson and Francis Crick.</span>

X Copernicus proposed a Sun-centered universe.

<span>-It was proposed in the 16th century.</span>

X Continental drift was explained by the theory of plate tectonics.

<span> -It was proposed at around 1910 till 1950 but was accepted at 1960. </span>

X The Earth was proven to be spherical.

-It was argued at around 384-322 BC.

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Fynjy0 [20]

Answer:

D

Explanation:

8 0
3 years ago
6. According to Crystal Field Theory, what should be the color of an aqueous solution of the ion [Y(H2O)6]3
UkoKoshka [18]

Answer:

Colourless

Explanation:

We know that Y^3+ has the electronic configuration of;

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 (the 5s and 4d levels are empty).

According to the crystal field theory, the colour of complexes result from transitions between incompletely filled d orbitals.

As a result of this, complexes with empty or completely filled d orbitals are colourless. Thus,  [Y(H2O)6]3 is colourless according to the Crystal Field Theory.

4 0
3 years ago
BRAINLIEST ANSWER! An Earth-like planet is 500 light years away. Why is this an obstacle for a manned space mission?
Over [174]
C sounds correct........
5 0
3 years ago
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Rationalize the difference in boiling points between the members of the following pairs of substances. Part APart complete HF (2
Mrrafil [7]

Answer:

HF has the higher boiling point because HF molecules are more polar. Part B: CHBr3 molecules possess stronger intermolecular interaction due to higher molar mass than CHCl3

Explanation:

Fluorine is more electronegative than chlorine. This implies that HF is more polar and possess stronger hydrogen bonds than HCl molecules.

In part B, the magnitude of dispersion forces depend on molar mass, the greater the molar mass, the greater the magnitude of dispersion forces between molecules, hence CHBr3 has a greater boiling point than CHCl3

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Dmitrij [34]

Answer:

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Explanation:

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