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galina1969 [7]
2 years ago
9

What is the frequency of light that has an energy of 3.98 x 10-18 J

Chemistry
1 answer:
Dominik [7]2 years ago
8 0
This is what i have found i hope this helps

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How would you prepare 3.5 L of a 0.9M solution of KCl?
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Calculate the mass of the solute <span>in the solution :

Molar mass KCl = </span><span>74.55 g/mol

m = Molarity * molar mass * volume

m = 0.9 * 74.55 * 3.5

m = 234.8325 g 

</span><span>To prepare 0.9 M KCl solution, weigh 234.8325 g of salt in an analytical balance, dissolve in a beaker, shortly after transfer with the help of a funnel of transfer to a volumetric flask of 100 cm</span>³<span> and complete with water up to the mark, then cover the balloon and finally shake the solution to mix

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3 years ago
Two different atoms have four protons each and the same mass. However, one has a positive charge while the other is neutral. Des
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The possible number and location of all subatomic are one of them is electrically neutral, while the other has a stable electronic configuration.

<h3>What are subatomic particles?</h3>

Subatomic particles are those particles that are present inside the atoms. They are electron, neutron, and proton. They are charged particles, protons are positively charged, electrons are negatively charged and neutrons are neutral.

The protons and electrons totally contribute to the atomic mass of the elements.

Thus, the subatomic particles are electrically neutral and stable to electronic configurations.

To learn more about subatomic particles, refer to the below link:

brainly.com/question/13303285

#SPJ1

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