Questions: Question 28 How many H atoms are in the molecule C6H3(C3H7)2(C2H5)? (A) 10 (B) 15 (C) 22 (D) 27 Question 29 A bond where the electrons are shared equally is called a(n): (A) polar covalent (B) coordinate covalent (C) nonpolar covalent. (D) ionic

Question 28

How many H atoms are in the molecule C6H3(C3H7)2(C2H5)?
(A) 10
(B) 15
(C) 22
(D) 27

Question 29

A bond where the electrons are shared equally is called a(n):
(A) polar covalent
(B) coordinate covalent
(C) nonpolar covalent.
(D) ionic

Transcript text: Question 28 How many H atoms are in the molecule $\mathrm{C}_{6} \mathrm{H}_{3}\left(\mathrm{C}_{3} \mathrm{H}_{7}\right)_{2}\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)$ ? (A) 10 (B) 15 (C) 22 (D) 27 Question 29 A bond where the electrons are shared equally is called $a(n)$ : (A) polar covalent (B) coordinate covalent (C) nonpolar covalent. (D) ionic

Solution

Solution Steps

Step 1: Determine the number of hydrogen atoms in each group

The molecule given is $\mathrm{C}_{6} \mathrm{H}_{3}\left(\mathrm{C}_{3} \mathrm{H}_{7}\right)_{2}\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)$. We need to count the hydrogen atoms in each part of the molecule.

For $\mathrm{C}_{6} \mathrm{H}_{3}$: There are 3 hydrogen atoms.
For $\left(\mathrm{C}_{3} \mathrm{H}_{7}\right)_{2}$: Each $\mathrm{C}_{3} \mathrm{H}_{7}$ group has 7 hydrogen atoms, and there are 2 such groups. So, $2 \times 7 = 14$ hydrogen atoms.
For $\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)$: There are 5 hydrogen atoms.

Step 2: Sum the hydrogen atoms

Add the hydrogen atoms from each part of the molecule: \[ 3 + 14 + 5 = 22 \]