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Tom [10]
3 years ago
10

Please help me with this questions

Chemistry
1 answer:
Anit [1.1K]3 years ago
8 0
The answer is b. Longer days.
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what mass of carbon dioxide will be produced when 12.9 g of butane reacts with an excess of oxygen in the following reaction?
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Graphite, an allotrope of carbon, is converted into cubic diamond through a process that may take a billion years or longer.
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Answer:

The given statement is true.

Explanation:

The given statement is true.

As per an estimate, to convert graphite into diamond nearly 1 billion to 3.3 billion years of time is required.

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</span><span>Gas chromatography can be useful in determining the chemical composition of paint.</span>
4 0
3 years ago
Read 2 more answers
What is the application of the emission spectra regarding elements?
malfutka [58]

The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state. The photon energy of the emitted photon is equal to the energy difference between the two states. There are many possible electron transitions for each atom, and each transition has a specific energy difference. This collection of different transitions, leading to different radiated wavelengths, make up an emission spectrum. Each element's emission spectrum is unique. Therefore, spectroscopy can be used to identify elements in matter of unknown composition. Similarly, the emission spectra of molecules can be used in chemical analysis of substances.

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