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fredd [130]
2 years ago
8

Can metal be recognised as a good heat shield? why or why not?? ​

Chemistry
2 answers:
fiasKO [112]2 years ago
4 0

Answer:

In summary, because of metal's unique properties, it can be an excellent heat shield (such as when aluminum foil is wrapped around warm food) or an excellent heat sink (such as when metals fins are attached to computer chips).

Molodets [167]2 years ago
3 0

Explanation:

Convection requires a fluid material that can move around. Typically, metals are solid, not fluid, and therefore do not participate in convection. ... This means that metal can be either a good heat shield, a mediocre heat shield, or a bad heat shield, depending on how we use it.

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Suppose that the pressure of 0.66 L of gas is 424.9 mm Hg when the temperature is 261.2 K. At what temperature is the volume 7.6
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Answer:

  • <u><em>Option a. 6200 K</em></u>

Explanation:

<u>1) Data:</u>

  • V₁ = 0.66 liter
  • P₁ = 42.9 mmHg
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<u>2) Formula:</u>

Combined law of gases:

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<u>3) Solution:</u>

  • Solve for T₂:

T₂ = P₂ V₂ T₁ / (P₁ V₁)

  • Substitute:

T₂ = 872.15 mmHg × 7.63 liter × 261.2 K / ( 424.9 mmHg × 0.66 liter)

T₂ = 6198 K

  • Rounding to 2 significant figures, that is 6200 K, which is the first choice.
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Fructose-1-P is hydrolyzed according to: Fructose-1-P + H2O → Fructose + Pi If a 0.2 M aqueous solution of Froctose-1-P is allow
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Explanation:

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Equilibrium conditions:

[Fructose-1-P]=6.52*10^{-5}M

[Fructose]=0.2M-6.52*10^{-5}M

[Pi]=0.2M-6.52*10^{-5}M

K_{eq}=\frac{(0.2M-6.52*10^{-5}M)*(0.2M-6.52*10^{-5}M)}{6.52*10^{-5}M}

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