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Lerok [7]
3 years ago
7

What information does the atomic number of an element provide?. A. the number of protons in one atom of the element. . B. the nu

mber of electrons in one atom of the element. . C.the number of neutrons in one atom of the element. . D. the total number of protons and neutrons in one atom of the element
Chemistry
2 answers:
Galina-37 [17]3 years ago
6 0
The correct answer for the given question above would be option A. The information that the atomic number of an element provides is the number of protons in one atom of the element. This also provides the chemical properties of an element as well as the total positive charges. 
shepuryov [24]3 years ago
5 0
D. the total number of protons and neutrons in a atom of the element. 
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Write the fraction of the mass of kcl produced from 1 g of k2c03​
Minchanka [31]

Mass of KCl= 1.08 g

<h3>Further explanation</h3>

Given

1 g of K₂CO₃

Required

Mass of KCl

Solution

Reaction

K₂CO₃ +2HCl ⇒ 2KCl +H₂O + CO₂

mol of K₂CO₃(MW=138 g/mol) :

= 1 g : 138 g/mol

= 0.00725

From the equation, mol ratio K₂CO₃ : KCl = 1 : 2, so mol KCl :

= 2/1 x mol K₂CO₃

= 2/1 x 0.00725

= 0.0145

Mass of KCl(MW=74.5 g/mol) :

= mol x MW

= 0.0145 x 74.5

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Answer:

1

Explanation:

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Answer:

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