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olchik [2.2K]
3 years ago
11

The arrows show the changes of state.

Chemistry
1 answer:
Romashka [77]3 years ago
3 0

Answer:

condensation

Explanation:

when gases change to liqud it condenses.This occurs when the temperature is lowered

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If 75 grams of oxygen react, how many grams of aluminum are required?
german

Answer:

84.24 g

Explanation:

Given data:

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Mass of Al required to react = ?

Solution:

Chemical equation:

4Al + 3O₂     →   2Al₂O₃

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Number of moles = 2.34 mol

Now we will compare the moles of oxygen with Al.

                          O₂         :          Al

                           3          :             4

                        2.34        :         4/3×2.34 = 3.12 mol

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Mass = 3.12 mol × 27 g/mol

Mass = 84.24 g

5 0
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