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worty [1.4K]
2 years ago
11

Which statement best describes the direction of heat flow by conduction between two samples of the same material?

Chemistry
2 answers:
tigry1 [53]2 years ago
6 0

Answer: 2. Heat flows from faster molecules to slower molecules when they collide.

Explanation: Hope this helped! :)

Goshia [24]2 years ago
4 0

Answer:

Heat flows from faster molecules to slower molecules when they collide.

Explanation:

brainliest will be appreciated

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How quickly must non-frozen ready-to-eat foods be consumed?
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Answer:

i believe 24 hours

Explanation:

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Explain why calcium combines in a different ratio to a fluoride ion versus an oxide ion.
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Answer:

This is due the different charges of fluoride and oxide ions.

Explanation:

When calcium reacts it is oxidized to Ca²⁺. In the same way, fluoride ion is reduced to F⁻ and oxide ion to O²⁻.

When these ions are combined, the molecule must be neutral. That means 2 ions of F⁻ are necessaries and just 1 O²⁻ ion will reacts producing:

CaF₂ and CaO.

The different charges of these ions is the reason why calcium will combine in different ratios.

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2 years ago
Two protons and two neutrons are released as a result of this reaction.
Murljashka [212]

<u>Answer:</u> The particle released in the given reaction is one alpha particle

<u>Explanation:</u>

In a nuclear reaction, the total mass and total atomic number remains the same.

For the given fission reaction:

^{222}_{86}\textrm{Rn}\rightarrow ^A_Z\textrm{X}+^{218}_{84}\textrm{Po}

  • <u>To calculate A:</u>

Total mass on reactant side = total mass on product side

222 = A + 218

A = 4

  • <u>To calculate Z:</u>

Total atomic number on reactant side = total atomic number on product side

86 = Z + 84

Z = 2

The isotopic symbol of unknown element is _{2}^{4}\textrm{He}. Another name of helium atom is alpha particle.

Hence, the particle released in the given reaction is one alpha particle

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2 years ago
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The molecular formula of a compound is always ________ the empirical formula. the molecular formula of a compound is always ____
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Molecular formula is an integral multiple of the empirical formula
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He is most likely finding the mean of the data.

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2 years ago
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