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olchik [2.2K]
3 years ago
15

Matter materials made of only one kind of atom is called:

Chemistry
2 answers:
Tju [1.3M]3 years ago
4 0

Answer:

Element

Explanation:

Elements are primary constituents of matter and consists of only one kind of atom. Elements are distinguished by atomic number. Elements cannot be broken down by any chemical reactions.

Compounds are substance made of two or more types of atoms. Compounds can be broken into its constituents elements

Matter can be of any type. Matter can be elements, compounds, mixture, etc.

Among given option, option b is correct.

patriot [66]3 years ago
3 0
Those are called as element
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Molality of the solution is defined as the number of moles of a substance dissolved divided by the mass of the solvent:

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From the concentration of 39% (by mass) of HCl in water, we construct the following  reasoning:

in 100 g solution we have 39 g hydrochloric acid (HCl)

number of moles  = mass / molecular weight

number of moles of HCl = 39 / 36.5 = 1.07 moles

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solvent (water) mass = 100 - 39 = 61 g

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