Dot and cross diagram for oxygen ion
1 answer:
Answer:
Explanation:
We can use dot and cross diagrams to show how a pair of electrons forms a covalent bond.
Here is the dot and cross diagram for oxygen (O2), a diatomic molecule. Notice the lone pairs of electrons and the two shared pairs of electrons.
There are different kinds of covalent bonds:
a single covalent bond is when two atoms share a single pair of electrons. Represented by a single line (–).
a double covalent bond is when two atoms share two pairs of electrons. Represented by a double line (＝).
a triple covalent bond is when two atoms share three pairs of electrons. Represented by a triple line (≡).
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<h3>Answer:</h3>
5.2 mol H₂O
<h3>General Formulas and Concepts:</h3><u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
<u>Chemistry</u>
<u>Stoichiometry</u>
- Using Dimensional Analysis
<u>Step 1: Define</u>
[RxN - Balanced] 6HCl + Fe₂O₃ → 2FeCl₃ + 3H₂O
[Given] 10.4 mol HCl
<u>Step 2: Identify Conversions</u>
[RxN] 6 mol HCl = 3 mol H₂O
<u>Step 3: Stoichiometry</u>
- Set up:
- Multiply/Divide:
Answer:
Recommended daily Amount (RDA) of magnesium is 410,000 μg/day.
Explanation:
There are 1000μg in 1 mg and 1000 mg in 1g
1 mg=1000μg
The Recommended daily Amount (RDA) is 410 mg/day of magnesium. Converting 410 mg/day into μg/day
It will become 410,000 μg/day
So Recommended daily Amount (RDA) of magnesium is 410,000 μg/day.