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geniusboy [140]
3 years ago
7

What is the period tables purpose?

Chemistry
1 answer:
alexgriva [62]3 years ago
4 0
The purpose is that it shows you all the elements we know and it arranges them in groups that are also the same kind like Chemistry.
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How would granite be classified as
vredina [299]

Answer:

Granite is an intrusive igneous rock which means it is cooled slowly deep upper the Earth's crust. It is composed of 25% to 35% quartz and over 50% potassium- and sodium rich feldspars.

Explanation:

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2 years ago
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The electronegativity values of fluorine, oxygen, and hydrogen are compared in the table. Comparison of Electronegativity Elemen
Dvinal [7]

The hydrogen bonding in H₂O is stronger than that of HF

Explanation:

Hydrogen bonds are special dipole-dipole attraction in which electrostatic attraction is established between hydrogen atom of one molecule and the electronegative atom of a neighboring molecule.

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Learn more:

hydrogen bond brainly.com/question/12408823

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4 0
3 years ago
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Answer:

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Explanation:

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5 0
2 years ago
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Two litres of an ideal gas at a pressure of 10 atm expands isothermally into a vacuum until its total volume is 10 litres. How m
nlexa [21]

Answer:

The work done and heat absorbed are both -8,1 kJ

Explanation:

The work done in an isobaric process is defined as:

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Vf = 10 L

Vi = 2 L

Thus, <em>W = -80 atm×L ≡ -8,1 kJ</em>

This is the work done in expansion of the gas.  As the gas remains at the same temperature, there is no change in internal energy doing that all work was absorbed as heat.

I hope it helps!

4 0
3 years ago
PLEASEEE HELP !!! How many moles of H2O are equivalent to 97.3 grams of H2O? <br><br> ___? = mol
Aleks04 [339]

no. of moles=mass/molar mass

                    =97.3/18

                    =<u>5.40555555556 moles</u>

5 0
3 years ago
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