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Ugo [173]
4 years ago
13

In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle

and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics?
Chemistry
1 answer:
liubo4ka [24]4 years ago
5 0

Answer:

Explanation:

h = 6.62607*10^9 Js

then you will need to apply the debroglie equation

The Equation is given by

λ= h/(mv)

where

λ= Wavelength

h = Planck Constant = 6.62607*10^9 Js (asjusted)

m = mass in kg

v = velocity in m/s

Now, substitute all data

a)

bacteria

8 pg = 8*10^-15 kg

WL = ( 6.62607*10^9) /((8*10^-15)(9*10^-6))

WL = 9.20*10^28

this will be classical

B)

WL = ( 6.62607*10^9) /((39)(2.7))

WL = 62925641.0256 m

classical

c)

m = 1.2*10^-21 g = 1.2*10^-24 kg

v = 22 m/s

WL = ( 6.62607*10^9) /((1.2*10^-24)(22))

WL = 2.50*10^32 m

this will be classical

d)

m = 255 mg = 255*10^-6 kg

v = 8*10^-3 m/s

WL = ( 6.62607*10^9) /((255*10^-6)(8*10^-3))

WL= 3.24*10^15 m

this must be classical

Conclusion

as far as the planet constant decreases; most of phenomena will be modelled and structured with classical equations.

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3 years ago
Where are the metalloids located on the periodic table?
algol [13]

Answer: The metalloids are a group of elements in the periodic table. They are located to the right of the post-transition metals and to the left of the non-metals. Metalloids have some properties in common with metals and some in common with non-metals.

Explanation:

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Neutral grain spirit is essentially the same as
Dennis_Churaev [7]

The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.

<h3>Meaning of neutral grain spirit</h3>

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5 0
2 years ago
Which of these elements has the smallest atomic radius?
nadya68 [22]

Answer:

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7 0
3 years ago
How much heat is required to convert 20.0 g of ice at 50.0⁰C to liquid water at 0.0⁰C? The specific heat of ice is 2.06 J/(g∙⁰C)
Alex777 [14]

Answer:

8740 joules are required to convert 20 grams of ice to liquid water.

Explanation:

The amount of heat required (Q), measured in joules, to convert ice at -50.0 ºC to liquid water at 0.0 ºC is the sum of sensible heat associated with ice and latent heat of fussion. That is:

Q = m\cdot [c\cdot (T_{f}-T_{o})+L_{f}] (1)

Where:

m - Mass, measured in grams.

c - Specific heat of ice, measured in joules per gram-degree Celsius.

T_{o}, T_{f} - Temperature, measured in degrees Celsius.

L_{f} - Latent heat of fussion, measured in joules per gram.

If we know that m = 20\,g, c = 2.06\,\frac{J}{g\cdot ^{\circ}C}, T_{f} = 0\,^{\circ}C, T_{o} = -50\,^{\circ}C and L_{f} = 334\,\frac{J}{g }, then the amount of heat is:

Q = (20\,g)\cdot \left\{\left(2.06\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot [0\,^{\circ}C-(-50\,^{\circ}C)]+334\,\frac{J}{g} \right\}

Q = 8740\,J

8740 joules are required to convert 20 grams of ice to liquid water.

3 0
3 years ago
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