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castortr0y [4]
3 years ago
15

Which particles make up the nucleus of an atom?

Chemistry
1 answer:
Vlada [557]3 years ago
5 0
D. protons and neutrons
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A student wants to determine the melting point of water as part of an investigation into the strength of electrostatic forces. T
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Answer:

No, it is not because the freezing point is not related to electrostatic forces.

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3 years ago
The rate constant for this first‑order reaction is
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Answer:

t = 5.7634 s

Explanation:

  • A → Pdts
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∴ T = 400°C

∴ α = 1 ....first-order

∴ CAo = 0.950 M

∴ CA = 0.300 M

⇒ t = ?

⇒ - δCA/δt = K*CA

⇒ - ∫δCA/CA = K*∫δt

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⇒ t = 1.1527 / 0.200 s-1

⇒ t = 5.7634 s

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