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2 years ago

Atmospheric pressure is the sum of the pressure created by all gases in the

Chemistry

1 answer:

Molodets [167]2 years ago

8 0

Answer:

high less air cause there is no trees and lower is the same

Explanation:

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If an endothermic reaction occurs in solution, the temperature of the solution will

Ahat [919]

Answer:

increase

Explanation:

because in endothermic reaction heat is absorbed

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3 years ago

An oil tanker spills a large amount of oil near the ocean shoreline. Which application of chemistry would best solve this proble

DochEvi [55]

I have heard they can use hair is stocking or nets to absorb the oil out of the water

3 0

3 years ago

Please Help I will reward brainliest

8_murik_8 [283]

I think it is "Known".

Radioactive decay is measured using a formula where the half-life <span>of an isotope is the time it takes for the original nuclei to decay half of its original amount.</span>

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3 years ago

Read 2 more answers

Elements in group 2 are called alkaline earth metals.what is most similar about alkaline earth metals

Shtirlitz [24]

Answer:

they are divalent elements

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3 years ago

Name two compounds with more exothermic lattice energies than scandium oxide and justify your choice.

N76 [4]

Answer:

1 . $Al_2O_3$

2. $TiO_2$

Explanation:

The more stable the ionic compound, the more is it lattice energy.

The more the charge on the cation and the anion, the greater is the lattice energy.
The less the size of the cation and the anion, the greater is the lattice energy.

Scandium oxide ( $Sc_2O_3$ ) is an oxide in which $Sc^{3+}$ behaves as cation and $O^{2-}$ behaves as anion.

The compounds which has higher lattice energy than scandium oxide are:

1 . $Al_2O_3$

This is because the charge are same on the cation and the anion as in the case of the Scandium oxide but the size of the cation $Al^{3+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

2. $TiO_2$

This is because the charge on the cation $Ti^{4+}$ is greater than that of $Sc^{3+}$ and also the size of the cation $Ti^{4+}$ is smaller than $Sc^{3+}$ . Thus, this corresponds to higher lattice energy.

3 0

3 years ago