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Dmitriy789 [7]
3 years ago
10

The north African maghreb states dominated by the Atlas Mountains do not include morocco

Geography
1 answer:
Sauron [17]3 years ago
7 0
Located in Algeria and Tunisia
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Since World War II, Germany's cultural center has been located in what region?
Scorpion4ik [409]

Answer: The answer is Southern Germany

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A V-shaped valley and no floodplain indicate a youthful, downcutting stream.
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A. True

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It is true that a V-shaped valley and no floodplain indicate a youthful, downcutting stream.

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What is the Wt% of SiO2 in augite?<br><br> (Ca, Fe, Mg, Na)(Mg,Fe,Al) (Si,Al)2 O6
vaieri [72.5K]

Answer:

The weight% of SiO_2 in augite is 13.16 %.

Explanation:

Atomic mass of calcium = 40 g/mol

Atomic mass of iron = 56 g/mol

Atomic mass of magnesium = 24 g/mol

Atomic mass of sodium = 23 g/mol

Atomic mass of aluminum = 27 g/mol

Atomic mass of silicon = 28 g/mol

Atomic mass of oxygen = 16 g/mol

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Molar mass of the augite (Ca, Fe, Mg, Na)(Mg,Fe,Al)(Si,Al)_2 O_6 = M

M=40 g/mol+2\times 56 g/mol+2\times 24 g/mol+23 g/mol+3\times 27 g/mol+2\times 28 g/mol+6\times 16 g/mol=456 g/mol

Weight% of SiO_2 in augite:

w\%=\frac{60 g/mol}{456 g/mol}\times 100=13.16\%

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14. Which statement is supported by the information in the table?
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Why may you be asked whether you are allergic to eggs before receiving a vaccination?
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