Average atomic mass is the weighted average atomic mass of the isotopes relative to their natural abundance
following formula can be used for average atomic mass of Cl
average atomic mass of Cl -( % of 35-Cl x 35 amu )+ (% of 37-Cl x 37 amu)
assuming percentage abundance of 35-Cl to be x and percentage abundance of 37-Cl is then (100-x)
average atomic mass of Cl - (35 * x%) + (37 x (100-x)%)
35.5 = 0.35x + 37 - 0.37x
0.02x = 1.5
x = 75%
therefore relative abundance of 35-Cl is 75%
Answer:
1520mmHg
Explanation:
Data obtained from the question include:
V1 (initial volume) = 600 mL
P1 (initial pressure) = 760 mmHg
V2 (final volume) = 300 mL
P2 (final pressure) =.?
Using the Boyle's law equation P1V1 = P2V2, the final pressure of the gas can easily be obtained as shown below:
P1V1 = P2V2
760 x 600 = P2 x 300
Divide both side by 300
P2 = (760 x 600) /300
P2 = 1520mmHg
The final pressure of the gas is 1520mmHg
You could put carbon or oxygen
Answer:
A sulfur ion with a charge of -2 = S⁻²
An iron ion with a charge of +3 = Fe⁺³
A chlorine ion with a charge of -3 = Cl⁻³
Explanation:
Anion:
Anion are formed when an atom gain the electrons.
Representation:
The anion of an atom is showed by adding the number of electrons gained by atom with negative sign as superscript on the symbol of an atom.
Cation:
Cation is formed when an atom lose the electron.
Representation:
The cation of an atom is showed by adding the number of electrons lose by an atom with positive sign as superscript on the symbol of an atom.
A sulfur ion with a charge of -2 = S⁻²
An iron ion with a charge of +3 = Fe⁺³
A chlorine ion with a charge of -3 = Cl⁻³