The ions in a formed;
- 13 - Al - Al^3+
- 34 - Se - Se^2-
- 56 - Ba - Ba^2+
- 7 - N - N^3-
- 87 - Fr - Fr^+
- 35 - Br - Br^-
<h3>What is the atomic number?</h3>
The atomic number is the number of protons in an atom. It is also the number electrons in the neutral atom. Now we know that when an ion is formed, electrons are lost or gained by the atom.
Let us now write the ions that are formed by each of the atoms of elements that have the atomic number as listed;
- 13 - Al - Al^3+
- 34 - Se - Se^2-
- 56 - Ba - Ba^2+
- 7 - N - N^3-
- 87 - Fr - Fr^+
- 35 - Br - Br^-
Learn more about atomic number:brainly.com/question/16858932
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It's very simple.......
Velocity= speed + direction
Velocity is the speed in which you know the direction of speed !!!
Answer:
179.2g of O2
Explanation:
Fir, we must obtain a balanced equation for the reaction.
The equation for the reaction is:
2H2 + 02 —> 2H2O
Next, we find the molar mass of H2 and O2 as shown below:
Molar Mass of H2 = 2x1 = 2g/mol
Mass conc. of H2 from the balanced equation = 2 x 2 = 4g
Molar Mass of O2 =16x2 = 32g/mol
From the equation,
4g of H2 required 32g of O2,
Therefore 22.4g of H2 will require = (22.4x32)/4 = 179.2g of O2
Answer:
I believe it is 42.3 billion years old
Explanation:
