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sineoko [7]
4 years ago
9

Why is the melting of ice not a chemical reaction?

Chemistry
1 answer:
ollegr [7]4 years ago
5 0
The molecules remain intact.
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Can someone please help me? i can give brainliest!!! :(
AlladinOne [14]

Answer:

it would be 5 and 3??? right

Explanation:

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3 years ago
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Calculate the percent composition of muscovite mica. Its chemical
Vikki [24]

Answer:

Explanation:

(KF)2(Al2O3)3(SiO2)6(H2O)

molecular formula

K₂F₂Al₆Si₆O₂₂H₂

2 x 39 + 2 x 19 + 6 x 27 + 6 x 28 + 22 x 16 + 2 x 2

=  78 + 38 + 162+ 168+ 352+ 4

= 802

Percentage of K = 78 x 100 / 802

= 9.72 %

Percentage of F = 38 x 100 / 802

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Percentage of Al = 162 x 100 / 802

= 20.2  %

Percentage of Si = 168 x 100 / 802

= 20.9  %

Percentage of O = 352 x 100 / 802

= 43.9 %

Percentage of H = 4 x 100 / 802

= .54  %

7 0
4 years ago
Why is fluorine a gas?​
mart [117]

Answer:

In fluorine, the electrons are tightly held to the nuclei. The electrons have little chance to wander to one side of the molecule, so the London dispersion forces are relatively weak. At a low enough temperature the molecules will all be solids. At a high enough temperature they will all be gases.

7 0
3 years ago
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if a ball of 50kg falls from a height 20m to the ground. Calculate the potential energy. ( g= 10m/s²)
Xelga [282]

Answer:

10000 Joules

Explanation:

P.E=MGH

= 50*20*10

= 10000

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4 years ago
What determines the amount of chemical energy something has
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The type of substance mass

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