There are 115 known elements as of today (Feb. 13, 2016)
so, 'C' is the correct answer
Answer:
D.
Explanation:
CH₃C≡ CCH₂CH₂Cl
Since there are 5 carbons so the suffix used is "pent"
There is a triple bond so its alkyne
So the compound becomes 2-pentyne (2 because the triple bond is with the 2nd carbon)
Then,
The functional group of chlorine is attached with 5th carbon So the compound becomes
5-chloro,2-pentyne
Boyle’s Law I’m pretty sure
Add Lime Water to the solution. If Carbon Dioxide is present the solution should go a white, milky colour due to the Calcium Hydroxide (chemical name for Lime Water) reacting with the Carbon Dioxide to form Calcium Carbonate.