What is the molecular mass of magnesium chloride,MgCl2?
You need to master this. Atomic mass Mg+ 2*(atomicmassCl)
google "periodic table"
To determine the molecular mass of magnesium chloride (MgCl2), we need to consider the individual atomic masses of magnesium (Mg) and chlorine (Cl), and then add them up.
The atomic mass of magnesium (Mg) is approximately 24.31 atomic mass units (amu), and the atomic mass of chlorine (Cl) is approximately 35.45 amu.
Since there are two chlorine atoms present in MgCl2, we need to multiply the atomic mass of chlorine (35.45 amu) by 2.
Therefore, the molecular mass of magnesium chloride (MgCl2) can be calculated as follows:
Molecular mass = (Atomic mass of magnesium) + (Atomic mass of chlorine × Number of chlorine atoms)
= 24.31 amu + (35.45 amu × 2)
= 24.31 amu + 70.90 amu
= 95.21 amu
So, the molecular mass of magnesium chloride (MgCl2) is approximately 95.21 atomic mass units (amu).