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irga5000 [103]
3 years ago
11

What is the formula for calculating the energy of a photon?

Chemistry
1 answer:
iren2701 [21]3 years ago
5 0

E=hf is the answer gotta run now hope the best for yall

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Write a balanced net ionic equation for the following reaction. Explain how you arrived at this answer. What did you cancel out?
Alex787 [66]

 The net ionic equation  is

Ag⁺(aq)  +Cl⁻(aq) →  AgCl(s)

<u><em>Explanation</em></u>

AgNO₃ (aq)  + KCl (aq)→ AgCl(s) +KNO₃(aq)


from above  molecular equation break  all  soluble electrolyte  into ions

Ag⁺(aq) +NO₃⁻ (aq) + K⁺(aq) +Cl⁻(aq) →   AgCl (s) + K⁺(aq) + No₃⁻(aq)


cancel the spectator  ions  in both side  of  equation =K⁺  and NO₃⁻  ions


The net  ionic equation is therefore

= Ag⁺(aq)  + Cl⁻(aq) →    AgCl(s)

4 0
3 years ago
Elements whose names end with âium are usually metals; sodium is one example. Identify a nonmetal whose name also ends with âium
Makovka662 [10]

Answer: Helium (He) and Selenium (Se) both are non metals ends with ium sound

Explanation:

He is a inert gas and Se belongs to oxygen family (VI A group)

8 0
3 years ago
In the evolution of extremely large stars, they begin as supergiants or supernovas, if the star nucleus is large enough it will
fenix001 [56]
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Suppose you are trying to separate three Proteins using Gel-Filtration chromatography. The sizes of each are given below:
Damm [24]

<u>Answer:</u> The correct answer is Protein B.

<u>Explanation:</u>

Gel-filtration chromatography is a separation technique that is based on the size of the molecules in a compound. It is also known as size-exclusion chromatography in which the eluent (carrier) used is an aqueous solution.

The matrix that is used is a porous material. When the sample is inserted in the column, the smaller particles interact strongly with the matrix than the large ones. Thus, as the eluent is passed through the matrix, larger molecules come out first, and the smallest molecule comes out last.

Given sizes of the proteins:

Protein A: 1200 kDa

Protein B: 2000 kDa

Protein C: 800 kDa

As protein B has the largest size of all the given proteins, it will emerge out first from the column.

Hence, the correct answer is Protein B.

3 0
2 years ago
The modern periodic table is arranged by increasing
Lilit [14]

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.

5 0
3 years ago
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