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3 years ago

Why are invasive species such a huge threat to ecosystems?

Chemistry

1 answer:

Varvara68 [4.7K]3 years ago

8 0

Answer:

Explanation:

invasive species can do intense damage so much that ecosystems may not be able to recover.

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Be sure to answer all parts. Write the equations representing the following processes. In each case, be sure to indicate the phy

barxatty [35]

Answer:

1. $S^{-}(g)+e^{-} \rightarrow S^{2-}(g)$

2. $Ti^{2+}(g) \rightarrow Ti^{3+}(g) \,\, IE = 2652.5\,kJ.mol^{-1}$

3.The electron affinity of $Mg^{2+}$ is zero.

4. $O^{2-}(g) \rightarrow O^{-}(g)+e^{-}$

Explanation:

Electron affinity:

It is defined as the amount of energy change when an electron is added to atom in the gaseous phase.

The electron affinity of $S^{-}$ is as follows.

$S^{-}(g)+e^{-} \rightarrow S^{2-}(g)$

Ionization energy:

Amount of energy required to removal of an electron from an isolated gaseous atom.

The third ionization energy of Titanium is as follows.

$Ti^{2+}(g) \rightarrow Ti^{3+}(g) \,\, IE = 2652.5\,kJ.mol^{-1}$

The electronic configuration of Mg: $1s^{2}2s^{2}2p^{6}3s^{2}$

By the removal of two electrons from a magnesium element we get $Mg^{2+}$ ion.

$Mg^{2+}$ has inert gas configuration i.e, $1s^{2}2s^{2}2p^{6}$

Hence, it does not require more electrons to get stability.

Therefore,the electron affinity of $Mg^{2+}$ is zero.

The ionization energy of $O^{2-}$ is follows.

$O^{2-}(g) \rightarrow O^{-}(g)+e^{-}$

3 0

3 years ago

In which of the following is most of the water on earth held?

Blizzard [7]

The most water on earth is held by the oceans .

4 0

3 years ago

Rachel carson's warning in silent spring was focused on

tatuchka [14]

The book documented the detrimental effects on the environment—particularly on birds—of the indiscriminate use of pesticides. -A

4 0

3 years ago

Is carbon dioxide a polar molecule? Why or Why Not?

irinina [24]

Explanation:

Carbon dioxide isn't a polar molecule because

same nature of charge appears in opposite direction which cancel each other. So, carbon dioxide is non-polar molecule.

6 0

3 years ago

a welding torch requires 4122.8L of ethylene gas at 0.64 atm what will be the pressure of the gas if ethylene is supplied by a 5

Ipatiy [6.2K]

Answer:

a welding torch requires 4122.8L of ethylene gas at 0.64 atm

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2 years ago