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andriy [413]
2 years ago
13

What elements is mercuric oxide composed of?

Chemistry
2 answers:
Gekata [30.6K]2 years ago
6 0
Binary compounds are compounds composed of just two elements. The simplest kind of decomposition reaction is when a binary compound decomposes into its elements. Mercury(II) oxide, a red solid, decomposes when heated to produce mercury and oxygen gas.
Tomtit [17]2 years ago
5 0

Answer:

Lavoisier reacted mercury with oxygen to form mercuric oxide

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Acid rain's effect on stone is a chemical change.

Explanation:

Acid rain has hydrochloric acid which reacts with the calcium carbonate in the stone.

I hope this helps. (Sorry if i am wrong)

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Melting is considered a(n) ___ change because energy is gained by the substance as it changes state
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Benzoyl chloride, C6H5COCl, reacts with water to form benzoic acid, C6H5COOH, and hydrochloric acid. This first-order reaction i
djyliett [7]

<u>Answer:</u> The time required for the conversion of benzoyl chloride to benzoic acid is 390 seconds.

<u>Explanation:</u>

The expression for the rate law of first order kinetics is given as:

\ln \frac{N}{N_o}=e^{-kt}      ......(1)

where,

N_o = initial mass of isotope = 100 g

N = mass of the parent isotope left after the time = 100 - 25 = 75 g

t = time taken = 26 s

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Putting values in above equation, we get:

\ln \frac{75}{100}=e^{-k\times 26}\\\\k=0.011065s^{-1}

Now, we need to find the time when 99 % of the reaction is complete. Using equation 1 again, we get:

N_o = initial mass of isotope = 100 g

N = mass of the parent isotope left after the time = 100 - 99 = 1 g

t = time taken = ? s

k = rate constant = 0.011065s^{-1}

Putting values in above equation, we get:

\ln \frac{1}{100}=e^{-0.011065\times t}\\\\t=416s

Time required for the conversion of benzoyl chloride to benzoic acid = 416 - 26 = 390 s

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