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storchak [24]
3 years ago
10

May someone help me with these questions it is only 2

Chemistry
1 answer:
garri49 [273]3 years ago
6 0
Most likely decreased birth rate and increased emigration.
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What substance is oxidized in the following reaction? 4HCl + MnO2 → Cl2 + 2H2O + MnCl2
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Answer:

Cl⁻ was oxidized.

Explanation:

  • 4HCl + MnO₂ → Cl₂ + 2H₂O + MnCl₂

Oxidation can be defined as the process in which the oxidation number of a substance increases.

On the left side of the equation, Cl has a charge of -1 (in HCl); while on the right side of the equation Cl has a charge of 0 in Cl₂.

Thus, Cl⁻ was oxidized.

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In the world of chemisty, a 'mole is a number of something ... a very lary large number of something.
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Just as a dozen is 12 of something, a mole is about 6.02 * 10^23 of something .
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During the nuclear fission process, the transformation between a parent and daughter isotope involves a a release of neutrons an
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Answer:

The energy harnessed in nuclei is released in nuclear reactions. Fission is the splitting of a heavy nucleus into lighter nuclei and fusion is the combining of nuclei to form a bigger and heavier nucleus. The consequence of fission or fusion is the absorption or release of energy.

Introduction

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All of the following are possible sources of error in a scientific investigation except for
Dimas [21]

Answer: Common sources of error include instrumental, environmental, procedural, and human. All of these errors can be either random or systematic depending on how they affect the results. Make sure you have your problem, hypothesis, evidence, analyze the data, ask yourself if the evidence supports ur hypothesis, draw conclusions, and communicate your results!

Explanation:

6 0
3 years ago
Read 2 more answers
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