Web Analytics
Answered

How many total atoms are there in 0.350 mol of potassium oxide (K2O)?


Hints:

Avogadro's number : 6.022 x 10^23

Mass number of Potassium : 39

Mass number of Oxygen: 16

Verified Answer :

monbon

You already have it in moles so that makes it easier to workout.  

Given:
There are 0.350 moles in this sample
There are 3 atoms in each potassium oxide molecule. 

How to solve:
1. Multiply the number of moles by Avogadro's number to convert moles into molecules. 
0.350 moles x \(\frac{6.02 x 10^{23} molecules}{1 mole}\) = 2.11 x 10²³ molecules.

2. There are 3 atoms per molecule so we need to multiply by 3. 

2.11 x 10²³ molecules x \(\frac{3 atoms}{1 molecule}\) = 6.33 x 10²³ atoms

samueladesida43

There are 2.107 × 10²³ atoms in 0.350 mol of potassium oxide (K2O).

HOW TO CALCULATE NUMBER OF ATOMS:

  • The number of atoms present in a substance can be calculated by multiplying the number of moles in that substance by Avogadro's number as follows:

no. of atoms = no. of moles × 6.02 × 10²³

  • According to this question, there are 0.350 mol of potassium oxide (K2O), hence, the number of atoms is as follows:

no. of atoms = 0.350 × 6.02 × 10²³

no. of atoms = 2.107 × 10²³ atoms of K2O

  • Therefore, there are 2.107 × 10²³ atoms in 0.350 mol of potassium oxide (K2O).

Learn more at: https://brainly.com/question/22552359?referrer=searchResults

Related Questions