Calculate the number of moles of Cl atoms in 1.81×10e24 formula units of magnesium chloride,MgCl2.
1.81E24*2/6.02E23
To calculate the number of moles of Cl atoms in 1.81×10^24 formula units of MgCl2, we first need to determine the number of moles of MgCl2.
The formula unit represents one complete formula of MgCl2, which consists of 2 moles of Cl atoms. Therefore, we can find the number of moles of MgCl2 using the Avogadro's number, which is 6.022 × 10^23 (representing one mole of any substance).
Number of moles of MgCl2 = (Number of formula units) / (Avogadro's number)
= (1.81×10^24) / (6.022 × 10^23)
Calculating this expression, we get:
Number of moles of MgCl2 = 3.01
Since each mole of MgCl2 contains 2 moles of Cl atoms, we can multiply the number of moles of MgCl2 by 2 to find the number of moles of Cl atoms.
Number of moles of Cl atoms = (Number of moles of MgCl2) × (2)
= 3.01 × 2
Calculating this expression, we get:
Number of moles of Cl atoms = 6.02 moles
To calculate the number of moles of Cl atoms in 1.81 × 10^24 formula units of magnesium chloride, MgCl2, you need to know the molar ratio between the magnesium chloride formula units and the chlorine atoms.
The formula of magnesium chloride, MgCl2, tells us that there are two chloride (Cl) atoms for every one magnesium (Mg) atom.
The molar ratio of Cl atoms to MgCl2 formula units is 2:1. This means that for every 2 moles of Cl atoms, there is 1 mole of MgCl2.
Now, let's calculate the number of moles of Cl atoms:
1. Determine the number of moles of MgCl2 formula units using Avogadro's number.
Number of moles of MgCl2 = Number of formula units / Avogadro's number
Number of moles of MgCl2 = 1.81 × 10^24 / 6.022 × 10^23
Number of moles of MgCl2 = 3.01
2. Calculate the number of moles of Cl atoms using the molar ratio.
Number of moles of Cl atoms = Number of moles of MgCl2 × (2 moles of Cl atoms / 1 mole of MgCl2)
Number of moles of Cl atoms = 3.01 × 2
Number of moles of Cl atoms = 6.02 moles
Therefore, there are 6.02 moles of Cl atoms in 1.81 × 10^24 formula units of magnesium chloride, MgCl2.