Question

How many atoms of S are present

in 0.25 moles of sulfur?
A. 4.2 x 10-25 atoms
C. 1.5 x 102 atoms
B. 6.02 x 1024 atoms
D. 4.2 x 102¹ atoms

Answer 1

To find the number of atoms of S in 0.25 moles of sulfur, multiply the number of moles by Avogadro's number. The correct answer is 1.5 x 10^23 atoms.

Step-by-step explanation:

To determine the number of atoms of S (sulfur) present in 0.25 moles of sulfur, we need to use Avogadro's number. Avogadro's number, which is equal to 6.02 x 1023 atoms/mole, tells us how many atoms are in one mole of any substance.

Therefore, to find the number of atoms in 0.25 moles of sulfur, we can use the following calculation:

Number of atoms = 0.25 moles x (6.02 x 1023 atoms/mole) = 1.505 x 1023 atoms

So, the correct answer is C. 1.5 x 1023 atoms.

Learn more about Calculating number of atoms in a given amount of substance