Question

The difference between the total number of hydrogen atoms in 78 g of ethyne and 168 g of baking soda is ​

Answer 1

Dear Student,

◆ Answer -

Difference = 2.409×10^24 atoms

● Explanation -

Moles of ethyne are calculated as -

n(ethyne) = 78 / 26

n(ethyne) = 3 mol

Each mol of ethyne contains 6.022×10^23 molecules of ethyne and each molecule will have 2 H-atoms.

So total H-atoms in ethyne is -

H-atoms in ethyne = 3 × 6.022×10^23 × 2

H-atoms in ethyne = 3.613×10^24 atoms

Moles of baking soda are calculated as -

n(baking soda) = 168 / 84

n(baking soda) = 2 mol

Each mol of baking soda contains 6.022×10^23 molecules of baking soda and each molecule will have 1 H-atom.

So total H-atoms in baking soda is -

H-atoms in baking soda = 2 × 6.022×10^23 × 1

H-atoms in baking soda = 1.204×10^24 atoms

Therefore, difference between H-atoms of ethyne and baking soda is -

Difference =

H-atoms in ethyne - H-atoms in baking soda

Difference = 3.613×10^24 - 1.204×10^24

Difference = 2.409×10^24 atoms

Thanks dear. Hope this helps you...