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torisob [31]
2 years ago
9

What do the dots around a symbol in a Lewis structure represent?

Chemistry
1 answer:
anzhelika [568]2 years ago
3 0
B. valence electrons
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Because atoms are electrically neutral, the number of protons and _____ in an atom are equal.
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5 0
3 years ago
Having been heated to 800 K , at some point the tank starts to leak. By the time the leak is repaired, the tank contains only ha
Liula [17]

Answer: The temperature of the gas reduced to 400K.

Explanation:

Stated that ; The pressure remains the same, that is initial and final pressure equals 1atm.

Applying Charles Law

V1/T1 = V2/T2

Initial volume V1 = 1

Final volume V2 = 1/2 (halved)

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3 0
3 years ago
How many millimeters are in 251 cm?
antoniya [11.8K]

Answer:

2510

Explanation:

Since there are 10 milimetres in 1 centimetre, 1 cm = 10mm

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251cm = 2510mm

3 0
3 years ago
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How many atoms of hydrogen are present: 2(NaHCO3)
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