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3 years ago

Is it is a broken window a physical change or chemical change?

1 answer:

iogann1982 [59]3 years ago

3 0

Breaking glass is an example of a physical change because if you break it, it is still glass. It didn't change to another substance.

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Hi does anyone have the data table answers for the Charles Law Lab Report from Edge?

ZanzabumX [31]

Answer:

Explanation:

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3 years ago

Please help!!!

Svetlanka [38]

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2 years ago

How many atoms are present in 23.0 g of carbon?

Elza [17]

Answer: 6.0225X10^23

Explanation:

We know that Carbon has atomic mass equal to 12g, I. E. One mole of carbon atom weighs 12g. We know that one mole of any substance contains 6.0225X10^23 particles(atoms, molecules, ions, etc.). Thus 12g of Carbon contains 6.0225X10^23 atoms of Carbon.

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2 years ago

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Vesnalui [34]

Answer:

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Explanation:

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2 years ago

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How many moles of hydrogen gas will be produced if 5.00 moles of zinc reactions with an excess amount of sulfuric acid

harkovskaia [24]

Answer:

Moles of Hydrogen produced is 5 moles

Explanation:

The balanced Chemical equation for reaction between zinc and sulfuric acid is :

$Zn(s) + H_{2}SO_{4}(aq) \rightarrow ZnSO_{4}(aq) + H_{2}(g)$

This equation tells that ; when 1 mole of Zn react with 1 mole of sulfuric acid, it produces 1 mole of zinc sulfate and 1 mole of hydrogen.

Since sulfuric acid is in excess so Zinc is the limiting reagent

(Limiting reagent : Substance which get consumed when the reaction completes, limiting reagent helps in predicting the amount of products formed)

Limiting reagent (Zn) will decide the amount of Hydrogen produced

$Zn(s) + H_{2}SO_{4}(aq) \rightarrow ZnSO_{4}(aq) + H_{2}(g)$

$1\ mole\ zinc\rightarrow 1\ mole\ H_{2}$

So,

$5\ mole\ zinc\rightarrow 5\ mole\ H_{2}$

Hence moles of Hydrogen produced is 5 moles

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2 years ago