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Annette [7]
3 years ago
14

What law allows calories to be determined by heat (energy) transfer from one substance to another, but it is never destroyed?

Chemistry
1 answer:
Mila [183]3 years ago
6 0

Answer:

matter i think

Explanation:

matter i am pretty sure

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Number of grams in four moles of BaCO3
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This compound is also known as Barium Carbonate. 1 mole is equal to 1 moles BaCO3, or 197.3359<span> grams.</span>
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How many grams of oxygen can be obtained from 250. grams of KCIO3?
guapka [62]

Answer:

Keep it simple. If all the oxygen contained in the 200 grams of potassium chlorate is produced in the decomposition, then all we have to do is find out how many grams of oxygen are there in the 200 grams. This we can do by calculating the ratio of oxygen mass to the whole. Using 39.1 for potassium, 35.45 for chlorine and 3 times 16, or 48 for the oxygen, we get a total of 122.55 grams per mole for potassium chlorate, of which 48 grams are oxygen. This ratio is 48/122.55. This ratio times the original 200 grams of the compound, gives us 78.34 grams of oxygen produced.

Explanation:

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just olya [345]

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It is always twice the value of the actual yield.

Explanation:

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the rate of a reaction increases when a catalyst has been added to the reaction mixture. the catalyst a) increases the kinetic e
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Catalyst, in chemistry, a substance that speeds up a reaction without itself being consumed. Enzymes are natural catalysts responsible for many important biochemical reactions.

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