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3 years ago

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what does a set of four quantum numbers tell you about an electron. compare and contrast the locations and properties of two ele

ctrons with quantum number sets (4,3,1,+1/2) and (4,3,-1,+1/2)

1 answer:

daser333 [38]3 years ago

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Why melting point of Fe in blast furnace is lower than ellingham?

Kaylis [27]

Answer:

Because they are different oxides.

Explanation:

In both processes they are involve Iron Oxides, but in the case of Ellingham diagrams, it is consider the Iron in combination with oxygen to form FeO, so the melting point is around 1600 ºC. In the case of blast furnace, the Fe that is present in the ores, are primary the hematite (Fe2O3) and the magnetite (Fe3O4).

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3 years ago

OLga [1]

Answer:

Gravity is the answer.

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2 years ago

When blood passes through the lungs, carbon dioxide and water are formed from carbonic acid dissolved in the blood. The carbon d

NeTakaya

Answer is: <span>decomposition.

Balanced chemical reaction: H</span>₂CO₃ → CO₂ + H₂O.
H₂CO₃ is carbonic acid.
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Chemical decomposition is the separation of a single chemical compound (in this example </span>carbonic acid<span>) into its two or more simpler compounds (in this example water and carbon dioxide).</span>

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3 years ago

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Which of these was NOT listed in the article a a way to stay safe while enjoying winter weather?

lukranit [14]

Answer:

<h2>ignore your body being cold</h2>

Hope it helps

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3 years ago

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What is the mass in grams of 0.280 mole sample of sodium hydroxide NaOH

vivado [14]

Answer:

The mass of 0.280 mole sample of sodium hydroxide NaOH is 11.2 grams.

Explanation:

To know the mass in grams of 0.280 moles of sample of sodium hydroxide NaOH, you must know the molar mass of the compound, that is, the mass of one mole of a substance, which can be an element or a compound.

So you know:

Na: 23 g/mole
O: 16 g/mole
H: 1 g/mole

So, the molar mass of NaOH is:

NaOH= 23 g/mole + 16 g/mole+ 1 g/mole= 40 g/mole

Then the following rule of three can be applied: if in 1 mole of sodium hydroxide there are 40 grams, in 0.280 moles how much mass is there?

$mass=\frac{0.28 moles*40 grams}{1 mole}$

mass= 11.2 grams

<u><em>The mass of 0.280 mole sample of sodium hydroxide NaOH is 11.2 grams.</em></u>

4 0

3 years ago