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asambeis [7]
3 years ago
5

which material should you use so that the area is cool in terms of temperture O asphalt O red bricks O concrete O soil O

Chemistry
1 answer:
Sindrei [870]3 years ago
3 0

Answer:

red bricks

Explanation:

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masha68 [24]
The answer to your question number 5 is b
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2 years ago
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In the reaction
NemiM [27]

Answer:

3 moles of CO are needed

Explanation:

Given data:

Number of moles of CO used = ?

Mass of Fe produced = 112 g

Solution:

Chemical equation:

Fe₂O₃ + 3CO      →        2Fe + 3CO₂

Number of moles of Fe:

Number of moles = mass/ molar mass

Number of moles = 112 g/ 55.85 g/mol

Number of moles = 2.00 mol

Now we will compare the moles of iron and CO.

                   Fe        :         CO

                   2          :         3

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6 0
2 years ago
What is the difference between energy levels, sub levels, and orbitals?
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Explanation:

Orbitals are spaces that have a high probability of containing an electron. ... The s sublevel has just one orbital, so can contain 2 electrons max. The p sublevel has 3 orbitals, so can contain 6 electrons max. The d sublevel has 5 orbitals, so can contain 10 electrons max.

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3 years ago
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Wendy made the following diagram shown to represent the solar eclipse.
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The moon should be between the sun and Earth
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The [H+] of a solution can be determined from the pH using the equation: [H+] = 10 - pH ... Where: [H+] = hydrogen ion concentra
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Answer:

pH = -log₁₀ [H⁺]

Explanation:

pH is a value in chemistry used in to measure solution trying to determine each quality, purity, risks for health of some products, etc.

As you write in the question, [H⁺] = 10^(-pH)

Using logarithm law (log (m^(p) = p log(m):

log₁₀ [H⁺] = -pH

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<h3>pH = -log₁₀ [H⁺]</h3>
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3 years ago
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