Question

A student obtains a 1.00 mole sample of titanium metal and a 1.00 mole sample of silver metal. Which of the

following is a true statement about these two samples?
The titanium sample has more atoms than the silver sample.
O The titanium sample has more mass than the silver sample.
The silver sample has more atoms than the titanium sample.
The silver sample has more mass than the titanium sample.

Answer 1

The silver sample has more mass than the titanium sample.

Further explanation

Given

1 mole titanium

1 mole silver

Required

mass and number of atoms

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance

1 mol = 6.02.10²³ particles

Moles can also be determined from the amount of substance mass and its molar mass

n = mass : molar mass

mass = n x molar mass

1 mole titanium ⇒ mass = 47,867 u

1 mole silver ⇒ mass = 107,8682 u

Both metals have the same number of atoms as they have the same number of moles i.e. 6.02.10²³

While the mass of silver is greater than the mass of titanium