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2 years ago

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Nezavi [6.7K]2 years ago

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I don't no this answer do you know then telle

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If a bar of motilium cost .0.2 dollars how much will 200 bars cost

lorasvet [3.4K]

Answer: 40

Explanation: 0.2 x 200

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3 years ago

Which number represents a basic pH, 4 or 9

jekas [21]

I know 4 is acidic so it has to be 9

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4 years ago

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What describes how the bond between two oxygen atoms is formed

HACTEHA [7]

The bond that exist between two oxygen atoms is called a double covalent bond. This bond involves the sharing of four electrons to obtain a more stable structure. This type of bond is much stronger than the single covalent bond. They are much harder to break.

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4 years ago

Rusting of iron is a very common chemical reaction. It results in one form from Fe reacting with oxygen gas to produce iron (III

Vlada [557]

<u>Answer:</u> The given amount of iron reacts with 9.0 moles of $O_2$ and produce 6.0 moles of $Fe_2O_3$

<u>Explanation:</u>

We are given:

Moles of iron = 12.0 moles

The chemical equation for the rusting of iron follows:

$4Fe+3O_2\rightarrow 2Fe_2O_3$

<u>For oxygen gas:</u>

By Stoichiometry of the reaction:

4 moles of iron reacts with 3 moles of oxygen gas

So, 12.0 moles of iron will react with = $\frac{3}{4}\times 12.0=9.0mol$ of oxygen gas

<u>For iron (III) oxide:</u>

By Stoichiometry of the reaction:

4 moles of iron produces 2 moles of iron (III) oxide

So, 12.0 moles of iron will produce = $\frac{2}{4}\times 12.0=6.0mol$ of iron (III) oxide

Hence, the given amount of iron reacts with 9.0 moles of $O_2$ and produce 6.0 moles of $Fe_2O_3$

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3 years ago

Polllination refers to the ___________

Alchen [17]

Explanation:

from internet

the act of transferring pollen grains from the male anther of a flower to the female stigma

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3 years ago

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