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olya-2409 [2.1K]
3 years ago
8

Which two scenarios illustrate the relationship between pressure and volume as described by Boyle’s law?

Chemistry
1 answer:
Kruka [31]3 years ago
5 0

Answer:

2) The volume of an underwater bubble increases as it rises and the pressure decreases

hope it was useful for you

stay at home stay safe

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In the heating curve of an unknown substance, the line labeled C represents what change(s)?
IceJOKER [234]

Answer:

C) Temperature and Kinetic Energy.

Explanation:

Hello there!

In this case, according to the generic heating curve on the attached file, it possible to see that on the point C, whereas the line is diagonal, the temperature increases, but also the kinetic energy increases because the molecules gain energy due to the increase of the temperature. It is important to say that on flat lines, like those on B and D, the phase change takes place and just the potential energy change.

In such a way, we infer that the answer is C) Temperature and Kinetic Energy.

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Explanation:

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7 0
3 years ago
Aqueous silver ion reacts with aqueous chloride ion to yield a white precipitate of solid silver chloride. When 10.0 mL of 1.00M
torisob [31]

Answer:

Explanation:

AgNO3 + NaCl --> AgCl + NaNO3

Number of moles

AgNO3

= molar concentration * volume

= 1 * 0.01

= 0.01 mol

NaCl

= 0.01 * 1

= 0.01 mol.

By stoichiometry, 1 mole of silver nitrate reacted with 1 mole of NaCl. Therefore,

Number of moles of AgCl formed = 0.01 × 1

= 0.01 mol AgCl formed.

Heat absorbed by solution during precipitation:

Mass of solution = density × total volume

= 1 × 20

= 20 g.

q = m * Cp * (T2 - T1)

= 20 * 4.18 * (32.6 - 25.0)

= 635 J

Since 635 J was absorbed by the solution, the reaction released -635 J

So, Delta H = -635 J/0.01 mol

= -63500 J/mol

= -63.5 kJ/mol.

8 0
3 years ago
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