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Ksenya-84 [330]
3 years ago
15

How did scientists refute the early atomic theory claim that atoms were indivisible?

Chemistry
2 answers:
galina1969 [7]3 years ago
4 0
I think ten correct answer is a
lozanna [386]3 years ago
4 0

Answer:

D. Scientists collided atoms of small mass together, observed reaction products with twice the mass of original atoms, and described this result as fusion.

Explanation:

The early atomic theory was purposed by Dalton and said that the atoms are the smallest particle, so they were indivisible. Further theories refuted that theory, such as Rutherford's experiment, in which particles alpha was bombarded in a gold foil, and was noticed that some of then have deviated, most passed through, and a few deviated completed.

Rutherford purposed that the atom is an empty space, with a small nucleus in the middle, and electrons orbiting it. But, most recently, by bombarding atoms of small mass together (such as hydrogen), scientists observed that other atoms with the double mass were formed, which means that it is impossible to the atom to be indivisible because had happened a fusion.

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Can anyone help with this? please
Sloan [31]

Answer:

Volume of solution = 80.5 mL

Explanation:

Given data:

Molarity  of solution = 4.50 mol/L

Mass of ethanol = 16.7 g

Volume of solution = ?

Solution:

Volume will be calculated from molarity formula.

Molarity  = number of moles / volume in L

Number of moles:

Number of moles = mass/molar mass

Number of moles = 16.7 g/ 46.07 g/mol

Number of moles = 0.3625 mol

Volume of solution:

Molarity  = number of moles / volume in L

4.50 mol/L = 0.3625 mol / volume in L

Volume in L =  0.3625 mol /4.50 mol/L

Volume in L = 0.0805 L

Volume in mL:

0.0805 L ×1000 mL/1 L

80.5 mL

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Lime is added to a lake to neutralize the effects of acid rain. The pH value of the
OverLord2011 [107]

Answer:

The change in concentration of H+ ions is -9.99×10⁻⁵

Explanation:

When pH rises, we talk about neutralization and, there is a decline in proton's concentration.

pH lower than 7 is acid

pH higher than 7 is basic

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H₃O⁺   +  OH⁻  ⇄   H₂O

pH = - log [H₃O⁺]

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In conclussion: [H₃O⁺]₁ = 10⁻⁴ → 1×10⁻⁴

[H₃O⁺]₂ = 10⁻⁷ → 1×10⁻⁷

1×10⁻⁷- 1×10⁻⁴

The change in concentration of H+ ions is -9.99×10⁻⁵

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