What is the mass of 4.54 10-2 moles of zinc chloride (ZnCl2)?
To find the mass of 4.54 x 10^-2 moles of zinc chloride (ZnCl2), you need to know the molar mass of ZnCl2.
- The molar mass is the mass of one mole of a substance and is expressed in grams per mole (g/mol).
- Zinc chloride (ZnCl2) consists of one zinc atom (Zn) and two chlorine atoms (Cl).
- The atomic mass of zinc (Zn) is 65.38 grams per mole (g/mol), and the atomic mass of chlorine (Cl) is 35.45 g/mol.
- To calculate the molar mass of ZnCl2, you need to multiply the atomic mass of zinc by one and the atomic mass of chlorine by two, then add them together:
Molar mass of ZnCl2 = (atomic mass of Zn * 1) + (atomic mass of Cl * 2)
Now let's calculate the mass of 4.54 x 10^-2 moles of ZnCl2:
- To find the mass, use the equation:
Mass = Number of moles x Molar mass
- Substitute the given values:
Mass = 4.54 x 10^-2 moles x Molar mass of ZnCl2
- Calculate the molar mass of ZnCl2 using the equation above.
Once you have the molar mass of ZnCl2, multiply it by 4.54 x 10^-2 moles to find the mass of the given quantity.