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AnnyKZ [126]
3 years ago
13

Describe what’s meant by a scientific method.

Chemistry
2 answers:
Aliun [14]3 years ago
8 0

Answer:

A scientific method is a method of research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is empirically tested.

Explanation:

Hope this helps! Mark Brainliest plz

Usimov [2.4K]3 years ago
5 0

Answer:hypothesisscientific question etc

Explanation:

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Answer:

5.625 moles of oxygen, O₂.

Explanation:

The balanced equation for the reaction is given below:

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From the balanced equation above,

4 moles of Al reacted with 3 moles of O₂.

Finally, we shall determine the number of mole of O₂ required to react with 7.5 moles of aluminum, Al. This can be obtained as illustrated below:

From the balanced equation above,

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Therefore, 7.5 moles of Al will react with = (7.5 × 3)/4 = 5.625 moles of O₂.

Thus, 5.625 moles of O₂ is needed for the reaction.

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