Question

How many moles of sodium atoms are contained in 3.5 moles of sodium sulfide

Answer 1

In 3.5 moles of sodium sulfide (Na₂S), there are 7 moles of sodium atoms because each molecule of sodium sulfide contains two sodium atoms.

Step-by-step explanation:

To calculate the number of moles of sodium atoms contained in 3.5 moles of sodium sulfide (Na₂S), we need to consider the chemical formula of the compound. Sodium sulfide is made up of two sodium atoms (Na) for every sulfide ion (S²⁻). Therefore, each mole of Na₂S will contain 2 moles of sodium atoms.

Using this stoichiometric relationship, the calculation for the number of moles of sodium atoms in 3.5 moles of sodium sulfide is as follows:

• Number of moles of Na in Na₂S = Number of moles of Na₂S * Number of Na atoms per molecule of Na₂S
• Number of moles of Na = 3.5 moles * 2 moles of Na/mole of Na₂S
• Number of moles of Na = 7 moles
• Therefore, there are 7 moles of sodium atoms in 3.5 moles of sodium sulfide.

Answer 2

7 moles

Step-by-step explanation:

The molecular formula of sodium sulfide is Na_2S

One molecule of Sodium sulfide has 2 atoms of sodium and one atom of sulfur

1 mole of Sodium sulfide has 2 moles of sodium and one mole of sulfur

so 3.5 moles of sodium sulfide will have 2× 3.5 moles of sodium atoms

i.e 2×3.5= 7 moles of sodium atom