Answer:
<h3>Chlorine </h3>
It has 7 electrons in it last shell. it will gain one electron to complete its octet and become Cl-. The ionic bond of chlorine form with potassium is Kcl ( potassium chloride)
- Phosphorus has 5 electrons in its last shell it need 3 more electron to stable .
- Sulphur has 6 electron. it needs 2 electrons
- Argon is already stable as it has 8 electrons in its last shell it will not gain or loose any electrons
Answer:
i think that part c
Explanation:
but wait for others so they answer as well so your answer will not be wrong
One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.
Oxygen gas produced : 0.7 g
<h3>Further explanation</h3>
Given
10.0 grams HgO
9.3 grams Hg
Required
Oxygen gas produced
Solution
Reaction⇒Decomposition
2HgO(s)⇒2Hg(l)+O₂(g)
Conservation of mass applies to a closed system, where the masses before and after the reaction are the same
mass of reactants = mass of products
mass HgO = mass Hg + mass O₂
10 g = 9.3 g + mass O₂
mass O₂ = 0.7 g
Answer:
hope this will help you......
