Explanation:
Noble gases are group O elements and their atomic structure ensures that they are stable. All their orbitals are completely filled with electrons therefore they do not undergo reactions with other elements.
- Heavier noble gases are able to form a range of compounds due their sizes.
- Elements form compounds by exchanging or sharing of their outermost shell electrons called the valence electron.
- Every atom has specific energy required to remove electrons from them. The energy is known as the ionization energy.
- In bigger atoms which have large radius, the outermost electrons have low ionization energy which makes them easy to remove.
- The ionization energy depends on the nuclear charge, the more the charge the higher the ionization energy. Down a group the nuclear charge and ionization decreases.
- As we go down the inert group, the ionization energy of outer shell electrons become very low. This makes the electrons available to take part in chemical reactions.
Learn more:
Noble gas brainly.com/question/10874792
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Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet
the answer is by adding the vectors.
i (J)hope this helps
The river current is moving with velocity vc=10 km/h in a certain direction relative to the shore. The boat is moving with velocity vb=10 km/h relative to the current, and in the same direction as the current, so the total velocity of the boat relative to the shore will be equal to the sum of the two vectors (because they are in the same direction):
v=vb+Vc = 10 km/h + 10 km/h = 20 km/h
Answer:
pH = 12.6
Explanation:
The HF reacts with LiOH as follows:
HF + LiOH → LiF + H₂O
To solve this question we need to find the moles of each reactant:
<em>Moles HF:</em>
0.1500L * (0.20mol / L) = 0.030 moles HF
<em>Moles LiOH:</em>
0.600L * (0.10mol / L) = 0.060 moles LiOH
That means there is an amount of LiOH in excess, that is:
0.060 mol - 0.030 mol = 0.030 moles LiOH
In 600.0mL + 150.0mL = 750.0mL = 0.750L
The molarity of LiOH is:
0.030 moles LiOH / 0.750L =
0.040M LiOH = [OH⁻]
As:
Kw = 1x10⁻¹⁴ = [H⁺] [OH⁻]
1x10⁻¹⁴ = [H⁺] [0.040M]
2.5x10⁻¹³M = [H⁺]
As pH = -log [H⁺]
<h3>pH = 12.6</h3>
Answer:
D
Explanation:
Process of elimination. There is more than just water vapor in a vape so it can't be D, it isn't a cigarette so it can't be B, and A is just clearly not the answer haha.