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Bad White [126]
3 years ago
8

When a magnesium ribbon is heated in air the product former is heavier.on the other hand when potassium manganate(VII) is heated

in air the product formed is lighter.Explian the difference iin observation
Chemistry
1 answer:
vesna_86 [32]3 years ago
4 0

Answer: On heating, Magnesium forms its oxide; while potassium manganate(VII) decomposes

Explanation:

Magnesium Mg, on heating forms Magnesium oxide

2Mg(s) + O2(g) --> 2MgO

Potassium permanganate KMnO4, on heating decomposes to potassium manganate K2MnO4, manganese dioxide MnO2, and Oxygen gas O2.

2KMnO4 --> K2MnO4 + MnO2 + O2

The difference in observation is that, on heating, Magnesium forms its OXIDE as product; while potassium manganate(VII) decomposes, giving OFF most of its constituents and reducing its weight.

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8 0
4 years ago
A compound is found to contain 38.65 % carbon, 16.25 % hydrogen, and 45.09 % nitrogen by mass. what is the empirical formula for
iren [92.7K]

The molar mass of carbon is 12, hydrogen is 1, and nitrogen is 14, hence the ratio are:

 

C = 38.65 / 12 = 3.22

H = 16.25 / 1 = 16.25

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Divide the three by the lowest ratio which is 3.22:

 

C = 3.22 / 3.22 = 1

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5 0
3 years ago
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Answer:

True

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Hope it helps

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Answer:

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Explanation:

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