2 years ago

Which action could cause a sample of liquid to boil?

Chemistry

2 answers:

bija089 [108]2 years ago

8 0

B I’m pretty sure this is right

bearhunter [10]2 years ago

4 0

Answer:

b i think.

Explanation:

good luck sorry if it is not correct

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Serhud [2]

Explanation:

Given that,

The frequency of electromagnetic spectrum is $2.73\times 10^{16}\ Hz$

(A) Let the wavelength of this radiation is $\lambda$ . We know that,

$c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{2.73\times 10^{16}}\\\\\lambda=1.09\times 10^{-8}\ m$

So, the wavelength of this radiation is $1.09\times 10^{-8}\ m$ .

(B) Let E is the energy associated with this radiation. Energy of an electromagnetic radiation is given by :

$E=hf$

h is Planck's constant

$E=6.63\times 10^{-34}\times 2.73\times 10^{16}\\\\E=1.8\times 10^{-17}\ J$

1 kcal = 4184 J

It means,

$1.8\times 10^{-17}\ J=\dfrac{1}{4184}\times 1.8\times 10^{-17}\\\\=4.3\times 10^{-21}\ \text{kcal}$

Hence, this is the required solution.

3 0

3 years ago

Why does water boil at a lower temperature at higher altitudes

Harlamova29_29 [7]

Atmospheric pressure increases as altitude increases therefore boiling time will need to be extended

5 0

2 years ago

Which branch of chemistry is most likely to involve the study of the earths crust

stepan [7]

I'm pretty sure it's organic chemistry.

5 0

2 years ago

A 30.5-g sample of water at 300. K is mixed with 48.5 g water at 350. K. Calculate the final temperature of the mixture assuming

ahrayia [7]

Answer:

sorry but i cant

Explanation:

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2 years ago

The atomic number of carbon is 6. its nucleus must contain:

Aloiza [94]

Must contain: 6 protons, 6 electrons and 12 neutrons.

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2 years ago