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Rama09 [41]
3 years ago
12

Increasing temperature can: change the phase of matter increase the number of protons add neutrons to the nucleus of an atom dec

rease the mass of matter
Chemistry
1 answer:
alexdok [17]3 years ago
4 0
It can change the phase of matter. The rest of the answers are chemical changes but increasing temperature indices a physical change which is only found in the first choice
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An atom of argon has a radius rar = 88 pm and an average speed in the gas phase at 25°C of 172 m/s.
Rudik [331]

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1.2* 10³ rNe.

Explanation:

Given speed of neon=350 m/s

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Δx*mΔv ≥\frac{h}{4\pi }

4π

h

..................(1)

mass of neon atom =\frac{20*10^{-3} }{6.22*10^{-23} } =3.35*10^{-26} kg

6.22∗10

−23

20∗10

−3

=3.35∗10

−26

kg

substituating the values in eq. (1)

Δx =4.49*10^{-8}10

−8

m

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Δx=\frac{4.49*10^{-8} }{38*10^{-12} }

38∗10

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4.49∗10

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=0.118*10^{4}10

4

* (rNe)

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Explanation:

This is the answer

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