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3 years ago

How is stoichiometry used to calculate energy absorbed when a mass of

Chemistry

1 answer:

andrezito [222]3 years ago

3 0

Answer: Option C is correct

Grams solid x mol/g * A Hfusion

Explanation:

This is because from fusion is associated to melting and this is a process where solid particles or substances goes through transition phase and turn to liquid.

There for the stoichiometry is used to calculate energy absorbed when solid mass melt with the formula Grams solid x mol/g * A Hfusion.

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Which factors determine the length of a bond between two elements?

Tanya [424]

Answer:

The length of the bond is determined by the number of bonded electrons (the bond order). The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length. Generally, the length of the bond between two atoms is approximately the sum of the covalent radii of the two atoms.

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3 years ago

Mention the significance of dams and irrigation canals?

GarryVolchara [31]

Significance of dams and canals are :- 

Water is stored in dams that are built across rivers. The water is then supplied to nearby towns and cities through pipelines

Water for agricultural purposes is supplied through a system of irrigation canals

hope it helps ~

3 0

3 years ago

Nonmetallic elements form ions by ____________

mr Goodwill [35]

Answer:

you know it is what it is☠

Explanation:

Nonmetallic elements form ions by valence electrons to complete their outer shell. The valence electrons an element has in its outer shell, the easier it is to complete. The electron shells an element has, the easier it is to fill its outermost shell.

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3 years ago

Unit of electro negativity

Luda [366]

Answer:

There are no units with electro negativity. Linus Pauling designed a scale of electro negativity that ranks elements with respect to each other. So, for example, fluorine is a 4.0 in comparison to 0.7 for francium.

Explanation:

6 0

3 years ago

Copper has two isotopes, copper-63 and copper-65. The relative abun-

Zolol [24]

Answer:

63.55 amu

Explanation:

(0.692 * 62.930) + (0.308 * 64.928) = 63.55 amu

Copper has two naturally occurring

isotopes: copper-63 (69.17%) and

copper-65 (30.83%).

Calculate the average atomic mass of

copper if the relative masses of the

isotope are copper 63 (62.93 amu)

and copper-65 (64.93 amu).

Cu-63 (0.6917 x 62.93 amu)

Cu-65 + (0.3083 x 64.93 amu)

Avg. mass = 63.55 amu

7 0

3 years ago