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Wittaler [7]
2 years ago
8

When heated zinc carbonate decomposed to form zinc oxide and carbon dioxide gas how do you knke decomposition is complete

Chemistry
2 answers:
katrin2010 [14]2 years ago
6 0

Answer:

This reaction is characteristic to metal carbonates, which decompose when heated to form the oxide of the metal and carbon dioxide gas.

Explanation:

Just did it...

shutvik [7]2 years ago
6 0

Answer:

If the temperature is sufficiently above the decomposition temperature, the mass of the mass will reach a steady level.  When this occurs, the decomposition is complete.  

Explanation:

If you have money and a mass spectrometer, you might consider monitoring the gas space above the zinc carbonate sample for CO2.  Once the sample stops emitting CO2, above the decomposition temperature, you may conclude the reaction has gone to completion.

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3 years ago
What does a TRAAP test stand for
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2 years ago
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The Nutrition Facts label for crackers states that one serving contains 19 g of carbohydrate, 4 g of fat, and 2 g of protein. Wh
sp2606 [1]

<u>Answer:</u> The amount of kilocalories contained in the given serving of crackes is 0.120 kCal

<u>Explanation:</u>

<u>As per the USDA:</u>

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram

We are given:

Mass of fat in the crackers = 4 g

Mass of carbohydrates in the crackers = 19 g

Mass of protein in the crackers = 2 g

Conversion factor used:  1 kCal = 1000 Cal

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1 gram of fat provides 9 calories

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1 gram of carbohydrates provides 4 calories

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8 0
3 years ago
How many grams of sodium sulfide can be produced when 45.3 g Na react with 105 g S?
RoseWind [281]
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The limiting reactant would be Na. We calculate as follows:

1.97 mol Na ( 1 mol Na2S / 2 mol Na ) (78.04 g / mol ) = 76.87 g Na2S produced</span>
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2 years ago
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