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3 years ago

What is the basic difference between the scientific meaning of “energy” and our everyday meaning of the word “energy?

1 answer:

4 0

The scientific meaning of energy is the power an object or force has that can be measured in joules, while the everyday meaning of energy is how awake a person is, or how eager a person is, and usually there isn’t a measurement.

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How much of a 50g sample of 85Kr will remain after 2 half-lives?

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3 years ago

Which is longer DNA or chromosone

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Explanation: Because if you stretch DNA it gets longer.

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3 years ago

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An unknown compound has the following chemical formula:

Softa [21]

Answer:

Formula of the compound = $P_2O_5$

Explanation:

Given,

No. of mole of O = 8.20 mol

No. of mole of P = 3.30 mol

Chemical formula = $P_2O_x$

Ratio of P and O = $\frac{2}{x}$

$\frac{2}{x} =\frac{3.3}{8.20} \\x \times 3.3 = 8.20 \times 2\\x = \frac{8.20 \times 2}{3.3} \\x=4.9969\\ = 5$

formula of the compound = $P_2O_5$

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3 years ago

What happens after excitation in spectroscopy.<br>

Bess [88]

Answer:

When a molecule is excited to a higher state it often ends up in its lowest excited state S1 and then emits radiation.

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3 years ago

Foxplain the term hybridizatim

serg [7]

Answer:

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In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory.

Explanation:

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3 years ago