Answer to Question #50310 in Chemistry for Meagan

Question

How many atoms does 2.0 moles of He represent?

Answer 1

According to the definition of mole: 1 mole ofsubstance consists of 6.022×10²³ elementary entities of thatsubstance;
1mole = 6.022×10²³
it means that in 2moles of He will be x elementary entities of that substance (atoms) of He.
From this proportion x = 2×6.022×10²³/1= 12.044×10²³ ≈ 1.2×10²⁴ atoms of He.

Answer: 1.2×10²⁴ atoms of He