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2 years ago

What initial temperature of the copper metal which equal to the temperature of the coffee?

Chemistry

1 answer:

Alekssandra [29.7K]2 years ago

6 0

It is this because it is okay

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Boyle's Law relates temperature to gas volume and Charles's Law relates pressure to gas volume.

vagabundo [1.1K]

False100% sure of it

4 0

3 years ago

Read 2 more answers

Calculate the wavelength of the photon that would be absorbed or emitted. Round your answer to 3 significant digits.

Flauer [41]

This is an incomplete question, the image for the given question is attached below.

Answer : The wavelength of photon would be absorbed, $3.06\times 10^{-7}m$

Explanation :

From the given diagram of energy we conclude that,

Energy at ground state, A = 400 zJ

Energy of 2nd excited state, C = 1050 zJ

Now we have to calculate the energy of the photon.

$E=E_c-E_A$

$E=(1050-400)zJ= 650zJ=650\times 10^{-21}J$

Now we have to calculate the wavelength of the photon.

Formula used :

$E=h\times \nu$

As, $\nu=\frac{c}{\lambda}$

So, $E=h\times \frac{c}{\lambda}$

where,

E = energy of photon = $650\times 10^{-21}J$

$\nu$ = frequency of photon

h = Planck's constant = $6.626\times 10^{-34}Js$

$\lambda$ = wavelength of photon = ?

c = speed of light = $3\times 10^8m/s$

Now put all the given values in the above formula, we get:

$650\times 10^{-21}J=(6.626\times 10^{-34}Js)\times \frac{(3\times 10^{8}m/s)}{\lambda}$

$\lambda=3.06\times 10^{-7}m$

Therefore, the wavelength of photon would be absorbed, $3.06\times 10^{-7}m$

5 0

3 years ago

I don't understand this problem<br>?Mg+?02=?Mg0

Ghella [55]

Explanation:

2Mg + O2 ➖ 2MgO

hope it helps

3 0

3 years ago

Describe how phospholipids form a barrier between water inside the cell and water outside the cell

Lynna [10]

<span>Phospholipids would have to form a phospholipid bilayer in order to achieve water on the outside and water inside. This is because the nonpolar tails of the phospholipids are facing each other in a water environment because they cannot interact with the water, only their own tails, while the phosphate heads of the molecule face the periphery of the tails and interact with water. Micelles are the simplest examples of these.</span>

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3 years ago

Because they have aromas, compounds with a ring of resonance bonds are called –

Shalnov [3]

Answer:

the answer is Fragrent compounds

6 0

3 years ago