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ratelena [41]
3 years ago
15

Atmos of given elements will have the same mass true or false .

Chemistry
2 answers:
Shkiper50 [21]3 years ago
8 0

True because,

Atoms of different elements have different masses because different atoms have a different number of subatomic particles i.e neutrons, protons and electrons.

Atomic mass of an element cannot be same as the mass of a single atom of that element because by investigation of mass spectrometry it was found that many naturally occurring elements exist in the form of two or more isotopes. Isotopes are the atoms of the same elements having the same atomic number containing the same number of protons but the different number of neutrons and because of this, it possesses different mass number. So, the observed atomic mass of the atom of an element is the average atomic mass of the elements. Average of masses of a different isotope of the same element is taken and then the atomic mass of the element is decided.

A formula to calculate average atomic mass:-

Example:-

Lithium exists in nature in the form of two isotopes Li−6 and Li−7 with atomic masses 6.0151u and 7.0160u and the percentages 7.59 and 92.41 respectively.

Solution:- Average atomic mass of Li

[Atomic mass of Li−6× percentage + Atomic mass of Li−7× percentage]/100

=

100

6.015u×7.59+7.0160u×92.41

​

=6.939u

Hence, the atomic mass of an element is not the same as the mass of a single atom of that element; Atomic mass is average of isotopic mass o atoms.

strojnjashka [21]3 years ago
8 0

Answer:

TRUE BRUHHHH maybe

Explanation:

TRUE BRUHHHHHHHGGGHHHGHGHGHGHHHHHHHHHHHHHHHHHHHHHHH

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How do I calculate the molecular weight of Mg(OH)2?
vodomira [7]

The molecular weight of Mg(OH)2 : 58 g/mol

<h3>Further explanation</h3>

Given

Mg(OH)2 compound

Required

The molecular weight

Solution

Relative atomic mass (Ar) of element : the average atomic mass of its isotopes  

Relative molecular weight (M)  : The sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

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Therefore, from the original solvent, hexane makes a larger contribution to the vapor pressure of the mixture.

To learn more about vapor pressure and hexane, visit: brainly.com/question/28206662

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