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Verdich [7]
3 years ago
10

A change of state is a(n) process. A. irreversible B. reversible

Chemistry
2 answers:
noname [10]3 years ago
8 0

Answer:

Reversible

Explanation:

Changes of state are physical changes in matter. Common changes of the state include melting, freezing, sublimation, deposition, condensation, and vaporization.

katrin2010 [14]3 years ago
7 0

Answer:

  • Changes of states are reversible, you can go from a solid to liquid and liquid to solid.
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When the potential difference across a lamp is 3.3V the current is 0.15 calculate the resistance of the lamp and give the unit
marissa [1.9K]

Answer:

22Ω

Explanation:

Given parameters:

Potential difference  = 3.3V

Current  = 0.15A

Unknown:

Resistance  = ?

Solution:

According to ohm's law, potential difference, current and resistance are related by the expression below;

             V = I R

where V is the voltage

           I is the current

          R is the resistance

          3.3 = 0.15 x R

             R = \frac{3.3}{0.15}   = 22Ω

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2 years ago
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Answer:

2.57 e-9

Explanation:

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