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hram777 [196]
3 years ago
6

Help!

Chemistry
1 answer:
babunello [35]3 years ago
7 0
D.mno4- is reuced it loses h atom

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It is a chemical change.

Explanation:

When the electricity is off, the filament cools down to its original physical state. This physical process repeats every time the light is turned on and off. However, if the bulb is cracked and air is introduced, the oxygen in the air reacts with the tungsten filament which then undergoes a chemical change.

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How can you show the conservation of mass when making a physical mixture?
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Answer:

A. Show that the total of the masses of the starting substances equals the mass of the mixture.

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In given photosynthesis reaction:

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there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

In a similar way if we have mixture of sugar and sand the total weight of mixture is equal to the weight of reactants.

sand + sugar + water    → mixture

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