What is the mass in grams of each elemental sample: a) 2.3 x 10³ mol of Sb, b) 0.0355 mol of Ba, c) 43.9 mol of Xe, d) 1.3 mol of W?

To calculate the mass of an elemental sample in grams given the number of moles, we can use the formula:

Mass (g) = Moles × Molar Mass (g/mol)

Now, let’s break this down by each element:

a) 2.3 x 10³ mol of Sb (Antimony)

The molar mass of Antimony (Sb) is approximately 121.76 g/mol.

Mass = 2.3 x 10³ mol × 121.76 g/mol = 2790.88 g

b) 0.0355 mol of Ba (Barium)

The molar mass of Barium (Ba) is approximately 137.33 g/mol.

Mass = 0.0355 mol × 137.33 g/mol = 4.87 g

c) 43.9 mol of Xe (Xenon)

The molar mass of Xenon (Xe) is approximately 131.29 g/mol.

Mass = 43.9 mol × 131.29 g/mol = 5765.71 g

d) 1.3 mol of W (Tungsten)

The molar mass of Tungsten (W) is approximately 183.84 g/mol.

Mass = 1.3 mol × 183.84 g/mol = 243.98 g

In summary, the masses are:

• 2.3 x 10³ mol of Sb: 2790.88 g
• 0.0355 mol of Ba: 4.87 g
• 43.9 mol of Xe: 5765.71 g
• 1.3 mol of W: 243.98 g