I know the correct answer is either a or d. Can anyone explain which one it is and why? CH3C ≡ CCH2CH2Cl is named: a. 1-chloro-3-pentyne b. 5-chloro-2-pentene c. 1-acetylenyl-3-chloropropane d. 5-chloro-2-pentyne

D

Step-by-step explanation:

Because It summarizes the rules of IUPAC system to name the compounds.

We have 5 carbon atoms that take the name (pent).

The carbon skeleton should be numbered that the position of the triple bond should have the lowest number in the skeleton, so the triple bond is between C2 and C3.

It takes the lowest number (2) and added (yne) at the end of the name.

(yne) is express the presence of triple bond.

The (Cl) atom take the number 5.

So, the correct name of the compound is 5-chloro-2-pentyne.

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%