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Tom [10]
2 years ago
9

Help please giving brainliest!

Chemistry
1 answer:
Alenkinab [10]2 years ago
4 0
Answer:

Temperature and volume are directly related.

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure. :)
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Compare the arrangements of individual particles in solids, liquids, and gases?
salantis [7]
Solid particles are all compacted together, liquid particles are not as close as solid particles but still move together, and gas particles do not stay together

4 0
3 years ago
In the original mixtures, test tube 1 contained magnesium and a zinc compound, and test tube 2 contained zinc
FromTheMoon [43]

Answer:

Test tube one is a compound because it is 2 elements combine..Test tube to is an element

Explanation:

5 0
2 years ago
This green solution of chromium(III) can further be reduced by zinc metal to a blue solution of chromium(II) ions. Write the bal
Contact [7]

Answer:

Half-reactions:

Cr³⁺ + 1e⁻ → Cr²⁺; Zn → Zn²⁺ + 2e⁻

Net ionic equation:

2Cr³⁺ + Zn → 2Cr²⁺ + Zn²⁺

Explanation:

The Cr³⁺ is reduced to Cr²⁺:

<h3>Cr³⁺ + 1e⁻ → Cr²⁺ -Half-reaction 1-</h3>

Zn is oxidized to Zn²⁺:

<h3>Zn → Zn²⁺ + 2e⁻ -Half-reaction 2-</h3>

Twice the reduction of Cr:

2Cr³⁺ + 2e⁻ → 2Cr²⁺

Now this reaction + Oxidation of Zn:

2Cr³⁺ + 2e⁻ + Zn → 2Cr²⁺ + Zn²⁺ + 2e⁻

<h3>2Cr³⁺ + Zn → 2Cr²⁺ + Zn²⁺ - Net ionic equation</h3>

6 0
2 years ago
To three significant digit,what is the mass percentage of iron in the compound Fe2O3​
svlad2 [7]

69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

 Mass percentage  = \frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3}  }  x 100

Molar mass of Fe = 55.85g/mol

Molar mass of O = 16g/mol

Molar mass of Fe₂O₃ = 2(55.85) + 3(16) = 159.7‬g/mol

Mass percentage  = \frac{2(55.85)}{159.7}  x  100   = 69.94% = 69.9%

learn more:

Mass percentage brainly.com/question/8170905

#learnwithBrainly

4 0
3 years ago
Which of the following is correct for the equation below? 2P(s) + 3Cl2(g) → 2PCl3(g) + 574 kJ
Lilit [14]
It's the first option choice on Plato
4 0
3 years ago
Read 2 more answers
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