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Hoochie [10]
3 years ago
15

Solid substance A has a melting point of 100°C. Liquid substance B has a freezing point of 110°C. For each substance, identify i

ts state of matter and describe the motion of its particles when the substance is at 115°C.
Chemistry
1 answer:
9966 [12]3 years ago
4 0

Answer:

both will be at liquid state. the particles will move rapidly in all directions and will collide with other particles in random motion

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1) How many moles are in 4.0x10^24 atoms?
-Dominant- [34]

Answer:

<h2>6.64 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{4 \times  {10}^{24} }{6.02 \times  {10}^{23} }   \\  = 6.644518...

We have the final answer as

<h3>6.64 moles</h3>

Hope this helps you

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