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Sedbober [7]
3 years ago
9

What metal is easily oxidized in rocks?

Chemistry
1 answer:
Tom [10]3 years ago
4 0
Sodium<span>, </span>magnesium,  <span>iron. :)</span>
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What is the chemical formula for magnesium hydroxide?
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Answer:

the chemical formula of magnesium hydroxide is Mg(OH)2

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3 years ago
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What is the molality of an aqueous KCl solution with a mole fraction of KCl, XKCl = 0.175? (The molar mass of KCl = 74.55 g/mol
NARA [144]

Answer:

The molality of the KCl solution is 11.8 molal

Explanation:

Step 1: Data given

Mol fracrion KCl = 0.175

Molar mass KCl = 74.55 g/mol

Molar mass H2O = 18.02 g/mol

Step 2: Calculate mol fraction H2O

mol fraction H2O = 1 - 0.175 = 0.825

Step 3: Calulate mass of H2O

Suppose the total moles = 1.0 mol

Mass H2O = moles H2O * molar mass

Mass H2O = 0.825 * 18.02 g/mol

Mass H2O = 14.87 grams = 0.01487 kg

Step 4: Calculate molality

Molality KCl = 0.175 / 0.01487 kg

Molality KCl = 11.8 molal

The molality of the KCl solution is 11.8 molal

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Explanation:

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some constellations, such ad Ursa Minor, are visible in the sky year-round; other contellations appear for only part of the year
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Describe the valence electrons in nitrogen and how it could bond to other atoms.
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