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vivado [14]
2 years ago
15

What is usually composed of two or more minerals

Chemistry
1 answer:
denis-greek [22]2 years ago
8 0
Rocks and minerals are usually composed of two or more minerals
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Number of electrons absorbed by the main energy level (n = 4):
VARVARA [1.3K]

Answer:

C

Explanation:

Because 2 x n square gives the total energy level been absorbed = 2 x16

=32

5 0
3 years ago
Almost 99% of earths atmosphere is made up of two gases. What are the two gases and the percents of each?
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The Answer Is A 21% oxygen and 78%nitrogen
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How many grams of fluorine are needed to generate 7.65 moles Carbon Tetrafluoride
Delicious77 [7]

Answer:

36.3375 g

Explanation:

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2 years ago
Is the continental crust less dense or more dense ?
zheka24 [161]

Answer:

It is less dense. It is also less dense than the oceanic crust.

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3 years ago
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An iron nail rusts when exposed to oxygen. According to the following reaction, how many moles of iron(III) oxide will be formed
Zigmanuir [339]

Answer:

0.453 moles

Explanation:

The balanced equation for the reaction is:

2Fe(s) + 3O2(g)  ==>  2Fe2O3

From the equation,  mass of O2 involved = 16 x 2 x 3 = 96g

                                 mass of Fe2O3 involved = [(2x26) + 3 x 16] x 2

                                                                            = 100g

                Therefore 96g of O2 produced 100g of Fe2O3

                                  32.2g of O2 Will produce   100x32.2/96

                                                   = 33.54g of Fe2O3

Converting it to mole using   number of mole = mass/molar mass

but molar mass of Fe2O3 = 26 + (16 X 3)

                                           = 74g/mole

Therefore number of mole of 33.54g of Fe2O3 = 33.54/74

                                                                           = 0.453 moles

5 0
3 years ago
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