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ludmilkaskok [199]
4 years ago
12

Thomson's model suggested that electrons were mixed into the sphere of an atom much like raisins ?

Chemistry
1 answer:
krek1111 [17]4 years ago
8 0
True, because his model has the electrons in the sphere of the atom, Thomson’s model was called the “Plum Pudding” model because it was popular and relatable at his time.
Hope this helps!! ^v^
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The relative formula mass (M) of a Group 2 metal carbonate is 197
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The relative atomic mass (Ar) : 137 and the element : Ba

<h3>Further explanation </h3>

The naming of chemical compounds is giving a special name to a compound that aims to facilitate the classification of compounds and facilitate the identification of a compound. The rules for naming chemical compounds have been determined by the IUPAC (International Union of Pure and Applied Chemistry)

This nomenclature includes the naming of ion compounds, covalent compounds, and polyatomic

The molar mass of a compound is given by the sum of the relative atomic mass of Ar  

M AxBy = (x.Ar A + y. Ar B)  

Group 2 metals have a +2 charge : M²⁺

So the compound of metal carbonate : MCO₃

Ar C = 12, O = 16

M MCO₃ = (1.Ar M + 1. Ar C+ 3. Ar O)  

\tt 197=1. Ar~M+1.12+3.16\\\\197=Ar~M+12+48\\\\Ar~M=137

The element with relative atomic masses 137 is Ba

So the compound : BaCO₃

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Finally, sometimes the desired value does not directly match the units given but is derived from the calculation required. For e
maria [59]

<u>Answer:</u> The thickness of metal sheet is 1.93 mm

<u>Explanation:</u>

The metals sheet is in the form of cuboid.

To calculate the width of the metal sheet for the given volume, we use the equation to calculate the volume of cuboid, which is:

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h = height of metal sheet = ? cm

Putting values in above equation, we get:

45.5cm^3=15.9\times 14.8\times h\\\\h=\frac{45.5}{15.9\times 14.8}=0.193cm

Converting this thickness into millimeters, we use the conversion factor:

1 cm = 10 mm

So, 0.193cm\times \frac{10mm}{1cm}=1.93mm

Hence, the thickness of metal sheet is 1.93 mm

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