In this item, we are simply to find the ions that may bond and are able to form a formula unit. We are also instructed to give out their name. There are numerous possible combinations of ions to form a compound. Some answers are given in the list below.
1. Na⁺ , Cl⁻ , NaCl ---> sodium chloride (this is most commonly known as table salt)
2. C⁴⁺ , O²⁻ , CO₂ ---> carbon dioxide
3. Al³+ , Cl⁻ , AlCl₃ ----> aluminum chloride
4. Ca²⁺ , Cl⁻ , CaCl₂ ---> calcium chloride
5. Li⁺ , Br⁻ , LiBr ---> lithium bromide
6. Mg³⁺ , O²⁻ , Mg₂O₃ ----> magnesium oxide
7. K⁺ , I⁻ , KI ---> potassium iodide
8. H⁺ , Cl⁻ , HCl --> hydrogen chloride
9. H⁺ , Br⁻ , HBr ----> hydrogen bromide
10. Na⁺ , Br⁻ , NaBr ---> sodium bromide
Answer:
The answer is "
"
Explanation:
When 
is added in the chemical equation it reacts with sodium acetate so, it will give the following chemical equation:
In this, the 
is a weak acid so, it not completely dissociated.
were strong electrolytes they are completely dissociated.
The 
is a strong acid so, it is completely dissociated So, the net ionic equation is:
Answer:
- <em>Number of protons, Z = 14</em>
- <em>Number of neutrons, N = 14</em>
Explanation:
<u>1) About isotopes:</u>
<em>Isotopes</em> are different kind of atoms of the same element. Hence, they have the atomic number (Z), which is the number of <em>protons</em>, the same number of electrons (talking about to neutral atoms, not ions), and different <em>number of neutrons N).</em>
This is, it is the number of neutrons what distinguish different isotopes of an element.
<u>2) About the notation used to distinguish different isotopes:</u>
A superscript and a subscript, both to the left of the chemical symbol of the element, are used to <em>distinguish different isotopes</em>:
A ←------------- This superscript tells the mass number of the isotope
X ←--------- This is the chemical symbol of the element
Z ←-------------- This subscript is the atomic number of isotope
In our case, the notiation for the isotope of silicon is: ²⁸₁₄ Si
So, we have:
- 28 is the mass number (A)
- 14 is the atomic number (Z)
- Si is the chemical symbol.
Now, you can answer the questions of the <em>part A</em>:
- Number of protons: Z = 14
mass number = number of protons + number of neutrons
A = Z + N
⇒ N = A - Z = 28 - 14 = 14
In <u>conclusion</u>:
- Number of protons, Z = 14
- Number of neutrons, N = 14
667.17 (0.63x1059) shsbsbsb
<span>At a depth of 34 feet the diver experiences 2 atmospheres of pressure.
At a depth of 68 feet the diver is experiencing 3 atmospheres.
At a depth of 102 feet the diver is experiencing 4 atmospheres of pressure.
At one atmosphere of pressure the body is mildy compressed. As the diver descends the divers body will undergo increased compression instead of being squashed.</span>
