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dolphi86 [110]
3 years ago
5

What are the chemical formulas for..

Chemistry
1 answer:
andrezito [222]3 years ago
6 0
S4O5
S3O
SeF6
N4S5
CCl9

All numbers should be subscripts
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If you hold a backpack in your hand, the force of gravity pulls it downward. What force keeps it from falling to the ground?
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The force of the gases pushes downward at the same time that the gases push the rocket upwards. 1.

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Recently, the United States government decided to construct a huge crypt in the middle of Yucca Mountain in Nevada to bury high-
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The three concerns that the residents of this area might be:

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Nucleotide bases bonded to a sugar phosphate backbone make up _____.
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3 years ago
How much time would it take for 5.2 x 10^5 atoms of fermium-253 (half-life 3 days) to decay to 6.5 x 104 atoms?
Jlenok [28]

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9 days, or 3 half-lives

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Hello!

In this case, since the enthalpy change for any process is computed by subtracting the enthalpy of the final state and the enthalpy of the initial state, for the given phase change, we subtract the enthalpy of the liquid (final state) and the enthalpy of the solid (initial state) considering this a melting process:

\Delta _rH=-390.76\frac{kJ}{mol} -(-408.27\frac{kJ}{mol} )\\\\\Delta _rH=17.51\frac{kJ}{mol}

Which makes sense because this process absorbs energy.

Best regards!

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2 years ago
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