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3 years ago

Sublimation is to change from

Engineering

2 answers:

Mashcka [7]3 years ago

5 0

Sublimation is the transition from the solid phase to the gas phase.

Sublimation is an endothermic phase transition. It occurs at temperatures and pressures below the "triple point." Sublimation can be used for many things including transferring images onto clothes and mugs or separating different types of mixtures.

Deffense [45]3 years ago

4 0

Answer:

The process in which a solid changes directly into gaseous form, without transcurring to the "intermediate-form" which would be the liquid form.

Explanation:

Some elements or substances can go directly from solid to gaseous form, and that process is called sublimation.

A common example of sublimation would be the sublimation of dry-ice, which is solid $CO_{2}$ . When the temperature of the dry ice reaches -78.5 ºC or higher, it will start becoming a gas.

Remember:

Solid → gas = sublimation

Solid → liquid = fusion

Gas → liquid = condensation

Gas → solid = deposition

Liquid → gas = evaporation

Liquid → solid = solidification

Hope it helped,

BiologiaMagister

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2 years ago

The electron concentration in silicon at T = 300 K is given by

puteri [66]

Answer:

$E=1.44*10^-7-2.6exp(\frac{-x}{18} )v/m$

Explanation:

From the question we are told that:

Temperature of silicon $T=300k$

Electron concentration $n(x)=10^{16}\exp (\frac{-x}{18})$

$\frac{dn}{dx}=(10^{16} *(\frac{-1}{16})\exp\frac{-x}{16})$

Electron diffusion coefficient is $Dn = 25cm^2/s \approx 2.5*10^{-3}$

Electron mobility is $\mu n = 960 cm^2/V-s \approx0.096m/V$

Electron current density $Jn = -40 A/cm^2 \approx -40*10^{4}A/m^2$

Generally the equation for the semiconductor is mathematically given by

$Jn=qb_n\frac{dn}{dx}+nq \mu E$

Therefore

$-40*10^{4}=1.6*10^{-19} *(2.5*10^{-3})*(10^{16} *(\frac{-1}{16})\exp\frac{-x}{16})+(10^{16}\exp (\frac{-x}{18}))*1.6*10^{-19}*0.096* E$

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2 years ago

What should you, the worker, be aware of with regard to evacuation procedures at your workplace

Alinara [238K]

Answer:

As a worker, it is important to follow the proper set of instructions or emergency plans during an emergent situation. Not carefully following the rules may result to a bigger problem such as further injury and damage to property.

Explanation:

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The awareness of the workers regarding the proper way to evacuate during emergency situation is very important. It will be easier for them to know where to locate the nearest exit route. They will also learn to stop any form of device or equipment that could cause a hazzard during the situation. In case of the hospital, which is also a workplace, the employees will also learn how to assist the patients before themselves. They will also know where to assemble if there's a need to do so.

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3 years ago

Read 2 more answers

Calculate the amount of current flowing through a 75-watt light bulb that is connected to a 120-volt circuit in your home.

vodomira [7]

Answer:

I = 0.625 A

Explanation:

Given that,

Power of the light bulb, P = 75 W

Voltage of the circuit, V = 120 V

We need to find the current flowing through it. We know that, Power is given by :