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Mandarinka [93]
3 years ago
10

What factor is responsible for keeping the inner core in a solid state

Chemistry
2 answers:
miskamm [114]3 years ago
7 0

high pressure is the answer for apex

Mrrafil [7]3 years ago
5 0
High pressure and heat
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An aqueous magnesium chloride solution is made by dissolving 7.15 moles of MgCl2 in sufficient water so that the final volume of
irinina [24]

Answer:

2.86mol/L

Explanation:

Given parameters:

Number of moles of MgCl₂  = 7.15moles

Volume of solution  = 2.50L

Unknown:

Molarity of the MgCl₂ solution = ?

Solution:

The molarity of a solution is the number of moles of solute found in a given volume.

  Molarity  = \frac{number of moles }{volume}  

 Insert the parameters and solve;

   Molarity  = \frac{7.15}{2.5}   = 2.86mol/L

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3 years ago
Name two elements that have the same properties as calcium (Ca). (4 points)
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 beryllium, magnesium, strontium,barium<span>, and </span><span>radium. </span>
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2 years ago
Arrange the compounds in order of decreasing magnitude of lattice energy:
Alik [6]

Answer:

The correct answer is CaO > LiBr > KI.

Explanation:

Lattice energy is directly proportional to the charge and is inversely proportional to the size. The compound LiBr comprises Li+ and Br- ions, KI comprises K+ and I- ions, and CaO comprise Ca²⁺ and O²⁻ ions.  

With the increase in the charge, there will be an increase in lattice energy. In the given case, the lattice energy of CaO will be the highest due to the presence of +2 and -2 ions. K⁺ ions are larger than Li⁺ ion, and I⁻ ions are larger than Br⁻ ion.  

The distance between Li⁺ and Br⁻ ions in LiBr is less in comparison to the distance between K⁺ and I⁻ ions in KI. As a consequence, the lattice energy of LiBr is greater than KI. Therefore, CaO exhibits the largest lattice energy, while KI the smallest.  

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This is how krypton appears in the periodic table. Rounded to the nearest whole number, how many protons are in an atom of krypt
Ierofanga [76]

36 is the answer hope it helps


8 0
2 years ago
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