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Assoli18 [71]
3 years ago
8

If you don't know all the answers just answer the ones you do know and number them so I know which one you are answering

Chemistry
2 answers:
BlackZzzverrR [31]3 years ago
6 0
2. answer is C.<span> Elements have the same physical and chemical properties in any period </span>
-Dominant- [34]3 years ago
6 0
1.which of the following characteristics was NOT included in Dmitri Mendeleev's periodic table

D. Distribution of elements determined by electron configuration 

2. According to the periodic law what is the relationship between elements and periods 

C. Elements have the same physical and chemical properties in any period

3. Which of these sets of elements has similar properties consult the periodic table 

A.Strontium, magnesium, calcium, beryllium
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The answer is D) The boy uses force to move the rock a distance
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Answer:

The answer of this question is molecule

4 0
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Lithium arsenate (Li3AsO4) and iron nitrate (Fe(NO3)3) are dissolved in water. What precipitate would you expect to form? what i
Alla [95]

Answer:

  • CO₃²⁻ +  H₂O <---------------->  HCO₃⁻ + OH⁻
  • The chemical formula of the precipitate is Fe(OH)₃

Explanation:

  • Fe(NO₃)₃ and K₂CO₃ are strong electrolytes and completely dissociate in water. Carbonate ions is a weak base and combine with water to form hydroxide ions (OH⁻), CO₃²⁻ +  H₂O <---------------->  HCO₃⁻ + OH⁻
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8 0
3 years ago
An ionic bond occurs between what particles?
atroni [7]

Answer:

A positive and negative ion.

Explanation:

Ionic bond:

It is the bond which is formed by the transfer of electron from one atom to the atom of another element.  

Both bonded atoms have very large electronegativity difference.

The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.

For example:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.  Sodium have one valance electron while chlorine have 7 valance electrons. In order to complete the octet chlorine require one electron while sodium need to lose its one electrons. That's why when both atom combine sodium lose its electron and becomes positive ion i.e cation while chlorine accept its electron and becomes negative ion called anion and bond between them is ionic bond.

4 0
3 years ago
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Determine the number of significant figures in each of the following
Otrada [13]

Answer:

A. 3 Significant Figures

B. 6 Significant Figures

C. 2 Significant Figures

D. 4 Significant Figures

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F. 5 Significant Figures

Explanation:

5 0
3 years ago
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