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schepotkina [342]
3 years ago
9

Match the following scientist with his experiment or contribution

Chemistry
1 answer:
Verdich [7]3 years ago
3 0

J. J. Thomson - oil drop

Albert Einstein - atomic theory

Niels Bohr - model of the atom

Ernest Rutherford - gold foil experiment

John Dalton - cathode ray tube

Robert Millikan - photoelectric effect

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sammy [17]

Answer:

Explanation:

1 is true

2 is false

3 is true

4 is true

5 is false

That is what I got from researching.

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Giving Brainliest If you answer this Correct:)
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The correct answer is A
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7. Why is the melting point of a substance
suter [353]

Answer: it is considered a physical property because it is changing its temperature and anything to do with color, odor, temp... is physical change ther for its considered a physical property.

Explanation: chemical change is when the whole chemical i-s changes such as Na(sodium) and Cl(cloride) both these chemicals separate are lowkey poisons and when you put them together it makes something not made to kill you or clean with something sorry for the long explination ;)

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What has the most direct cause to the increase in the number and ferocity (strength) of storms hitting the Caribbean and the Uni
Leto [7]

Answer:

High amount of humidity

Explanation:

This is especially common in the Caribbean, where hot temperatures very moisture and warm air provide near-ideal circumstances for hurricane formation, as assessed by the Saffir-Simpson classification and the Power Distribution Index.

"Hurricanes may originate everywhere in the Atlantic basin, from the subtropical central Atlantic to the Gulf coast. However, in order to make this all the way to the West Coast of the United States, the storms must pass over a lengthy length of sea water which is far too small to support hurricanes.

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What orbitals are used to form the 10 sigma bonds in propane (ch3ch2ch3)? Label each atom with the appropriate hybridization. Dr
SVETLANKA909090 [29]

Mixing of pure orbitals having nearly equal energy to form equal number of completely new orbitals is said to be hybridization.

For the compound, CH_3CH_2CH_3 the electronic configuration of the atoms, carbon and hydrogen are:

Carbon (atomic number=6): In ground state= 1s^{2}2s^{2}2p^{2}

In excited state: 1s^{2}2s^{1}2p^{3}

Hydrogen (atomic number=1): 1s^{1}

All the bonds in the compound is single bond(\sigma-bond) that is they are formed by head on collision of the orbitals.

The structure of the compound is shown in the image.

The Carbon-Hydrogen bond is formed by overlapping of s-orbital of hydrogen to p-orbital of carbon.

In order to complete the octet the required number of electrons for carbon is 4 and for hydrogen is 1. So, the electron in 1s^{1} of hydrogen will overlap to the 2p^{3}-orbital of carbon.

Thus, the hybridization of Hydrogen is s-hybridization and the hybridization of Carbon is sp^{3}-hybridization.

The hybridization of each atom is shown in the image.

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3 years ago
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