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2 years ago

describe how knowledge of the periodic table would be important in three different careers, based on what you’ve read.

1 answer:

5 0

The knowledge of periodic table would be important in these three different careers such as medicine, pharmacology and engineering.

<h3>What is the importance of periodic table in following careers?</h3>

Periodic table is organised the whole elements vertically in groups and horizontally in periods with increasing atomic number.

The knowledge of arrangement of these elements serves alot of purposes in the following three different careers:

Medicine: The element, iron is an important metal in the periodic table used in treatment of low blood levels.

Pharmacology: The transition metals are useful in the field of pharmacology for the production of drugs. Example of such elements are chromium, manganese, cobalt, nickel, copper, and molybdenum.

Engineering: The information of elements in the periodic table helps engineers in designing of materials used for constructions.

Therefore, the knowledge of periodic table is very important in these three different careers such as medicine, pharmacology and engineering.

Learn more about period table here:

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Water changes from a liquid to a gas in the process of evaporation. <br> true or false

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3 years ago

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If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of

valkas [14]

<u>Answer:</u> Osmolarity of the sodium chloride solution is 18 Osmol/L.

<u>Explanation:</u>

Osmolarity is defined as the the concentration of the solution which is expressed as the total number of solution particles present in one liter of solvent.

We are given the molarity of the solution which is 3mol/L and to convert it into osmolarity, we will multiply the number of osmoles that are produced by the solute.

Osmole is defined as the particles that contribute to the osmotic pressure of a solution.

The solute given here is sodium chloride (NaCl). Number of osmoles can be determined by the dissociation of this solvent into ions.

The equation given by the dissociation of NaCl:

$NaCl\rightarrow Na^++Cl^-$

1 mole of sodium chloride produces 2 moles of ions.

So, 3 moles of sodium chloride will produce = (3 × 2) = 6 moles of ions.

Hence, osmolarity of the sodium chloride solution will be $6\times 3mol/L=18Osmol/L$

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3 years ago

someone pls help me with my chemistry test plsss my teacher changes the questions so I can't search them up. its 21 questions so

shusha [124]

Answer:

Correct option is

5 liters of CH

(g)NO

at STP

No. of molecules=

22.4

mol=

22.4

×N

molecules

A) 5ℊ of H

(g)

No. of moles=

mol=

×N

molecules

B) 5l of CH

(g)

No. of moles of CH

22.4

mol=

22.4

molecules

C) 5 mol of O

=5N

molecules

D) 5×10

molecules of CO

(g)

Molecules of 5l NO

(g) at STP=5l of CH

(g) molecules at STP

Therefore, option B is correct.

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2 years ago

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Zielflug [23.3K]

It would be 335 J and of energy is released

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3 years ago

As water starts to freeze, the molecules of water

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Move more freely :) hope this helps!

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3 years ago