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UkoKoshka [18]
2 years ago
9

Of the following, which is NOT a way to classify a biome?

Chemistry
2 answers:
slavikrds [6]2 years ago
8 0

Answer:

B

Explanation:

Economic principles has nothing to do with biome determination.

Artyom0805 [142]2 years ago
7 0
Answer: It’s B Explanation: it has nothing to do with classifying a biome.
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The chemical combination of two or more different atoms in fixed amounts is called a(n)
valkas [14]
I think the correct answer from the list of choices above is option B. <span>The chemical combination of two or more different atoms in fixed amounts is called a compound. There are two type of compounds namely the ionic and covalent compounds.</span>
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3 years ago
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What is the mass number of a single atom of magnesium-25?
Masja [62]

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How much of a 0.250 M lithium hydroxide is required to neutralize 20.0 mL of 0.345M chlorous acid?
Bumek [7]

Answer:

27.6mL of LiOH 0.250M

Explanation:

The reaction of lithium hydroxide (LiOH) with chlorous acid (HClO₂) is:

LiOH + HClO₂ → LiClO₂ + H₂O

<em>That means, 1 mole of hydroxide reacts per mole of acid</em>

Moles of  20.0 mL = 0.0200L of 0.345M chlorous acid are:

0.0200L ₓ (0.345mol / L) = <em>6.90x10⁻³ moles of HClO₂</em>

To neutralize this acid, you need to add the same number of moles of LiOH, that is 6.90x10⁻³ moles. As the LiOH contains 0.250 moles / L:

6.90x10⁻³ moles ₓ (1L / 0.250mol) = 0.0276L of LiOH =

<h3>27.6mL of LiOH 0.250M</h3>
6 0
2 years ago
Determine the the mass of one molecule of hydrogen sulfide gas.
Alchen [17]

Answer:

the molecular mass of hydrogen sulphide, which contains two atoms of hydrogen and one atom of sulphur is = 2 — 1 + 1 — 32 = 34 a.m.u.

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What is20 grams of HNO^3
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63.01284*20=1260.568

7 0
2 years ago
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