3 years ago

Why do different chemicals emit different colors of light, and why is the color emitted specific to that chemical?

1 answer:

7 0

<span>Every chemical is made up of atoms and each atom has one or more electrons surrounded its nucleus. The electron emits light after changing from a high energy state o to a lower energy state which is known as transition. The color of this light is unique to each element because each atom of a particular element has a different transition energy.</span>

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If a cross-country runner covers a distance of 347 meters in 134 seconds what is her speed?

Vlad1618 [11]

Distance s=347 meters
time t=134 sec.
speed =s/t=347/134=2.5896 m/s nearly

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3 years ago

What element is being reduced in the redox reaction? H2O2+ ClO2- > ClO- + O2

slava [35]

Answer:

Explanation:

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olasank [31]

Answer:

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Explanation:

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3 years ago

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DedPeter [7]

Strong nuclear force. I think that's the one one that holds the nucleons together.

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3 years ago

When chemists write out reactions, they often place numbers to the left of a chemical formula.

guajiro [1.7K]

The number to the left of a chemical formula is called coefficients

Explanation

Coefficient is the number in front of a chemical formula.

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in 2H+O→ H2O the coefficient are 2,1,1

that is, 2 in front of H2

1 in front of O

1 in front of H2O

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2 years ago

Read 2 more answers