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3 years ago

The scientific principle which is the basis for balancing chemical equations is

Chemistry

1 answer:

Lubov Fominskaja [6]3 years ago

7 0

Answer:

Law of Conservation of Mass

Explanation:

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What is an example of a colloid?<br> A. Soda<br> B.Fog<br> C.Jewelry<br> D.Silverware

Olegator [25]

Answer:

the current answer is

silverware

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4 years ago

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I need a Help plz! It’s my final exam!

LekaFEV [45]

Um i think gold... i think?

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3 years ago

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.

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4 years ago

A student learned that thermal energy moves in a predictable pattern. The

Novay_Z [31]

Answer:

Explanation:

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3 years ago

How would you express the frequency of a wave in which five peaks passed a given point each second?

Pani-rosa [81]

n = number of peaks passed a particular point = 5

t = time taken by the peaks to pass a particular point = 1 sec

f = frequency of the wave

by definition , frequency is the repetition of an event in a given interval of time.

we know that frequency is given as

f = n/t

inserting the values

f = 5/1

f = 5 Hz

hence the frequency of the wave comes out to be 5 Hz

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3 years ago