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3 years ago

Why does the percentage of water vapor vary?

Physics

1 answer:

Mademuasel [1]3 years ago

7 0

Because temperature sets a limit to how much water vapor can be in the air.

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não é difícil de perceber uma relação aditiva entre os termos consecutivos (1;3;6;10...)(A)qual é o sexto e décimo número triang

EastWind [94]

It is 15 and 45 ............

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3 years ago

In the voltage multiplier experiment, why not use a zener diode?

Svet_ta [14]

Answer:

<em>A voltage multiplier is an electrical circuit that converts AC electrical power from a lower voltage to a higher DC voltage, typically using a network of capacitors and diodes.</em>

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2 years ago

A softball is hit high into the air. As it rises, the softball

bija089 [108]

Answer:

whats the Question? (i play softball and its amazing btw lol)(ugh staying at home is getting to me)

Explanation:

8 0

3 years ago

Read 2 more answers

What is the maximum wavelength a photon can have if it is to possess sufficient energy to cause this dissociation?

Alona [7]

I attached the full question.
We need to calculate the enthalpy change first:
$\Delta H=$(247kJ)-(142.3kJ)=+105.2kJ$
Keep in mind this is the energy per mole, we need energy per atom:
$E=\frac{105200}{6.02 \cdot 10^{23}}$
We can see that this reaction needs the energy to get started (enthalpy change is positive).
The energy of a photon is given with this formula:
$E=\frac{hc}{\lambda}$
We need this photon to have the same energy (or higher) as our enthalpy change:
$105.2=\frac{6.62\cdot 10^{-34}\cdot 3\cdot 10^ 8}{\lambda}\\ \lambda=\frac{6.62\cdot 10^{-34}\cdot 3\cdot 10^ 8}{105.2/(6.02\cdot 10^{23})} \\\lambda=1.138\mu m$
This wavelenght is clasified as near infrared.

5 0

3 years ago

How much heat is given off when 210.0g of water at 0 degrees freezes into ice?

Sergio [31]

In the freezing physical change, when 210.0 g of water a 0 degrees freezes into ice, it gives off 71.0 kJ of heat.

<h3>What is freezing?</h3>

It is a physical change in which liquids give off heat to form solids.

We have 210.0 g of water at 0°C. We can calculate the amount of heat given off when it freezes into ice using the following expression.

Q = ΔH°fus × m

Q = 0.334 kJ/g × 210.0 g = 70.1 kJ

where,

Q is the heat released.
ΔH°fus is the latent heat of fusion.
m is the mass.

In the freezing physical change, when 210.0 g of water a 0 degrees freezes into ice, it gives off 71.0 kJ of heat.

Learn more about freezing here: brainly.com/question/40140

#SPJ1

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2 years ago