Question #50310

How many atoms does 2.0 moles of He represent?

Expert's answer

According to the definition of mole: 1 mole ofsubstance consists of 6.022×10^{23} elementary entities of thatsubstance;

**1mole** = **6.022×10**^{23}

it means that in**2moles** of He will be **x** elementary entities of that substance (**atoms**) of He.

From this proportion x = 2×6.022×10^{23}/1= 12.044×10^{23} ≈ **1.2×10**^{24 }atoms of He.

**Answer: 1.2×10**^{24} **atoms of He**

it means that in

From this proportion x = 2×6.022×10

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