Decide Whether or Not the Set Is Closed Under Multiplication

question 1

Multiple Choice

Decide whether or not the set is closed under multiplication.
-W - {10}

• A)Not closed
• B)Closed

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Definitions:

Grubbs Catalyst

A series of transition metal carbene complexes used in olefin metathesis reactions, known for their robustness and wide applicability in organic synthesis.

1,8-nonadiene

An organic compound, a diene with the formula C9H16, featuring double bonds at the 1st and 8th positions, used in the synthesis of polymers and chemicals.

Cationic Polymerization

A type of polymerization initiated by a positively charged species (cation), leading to the formation of polymers.

Isobutylene

A hydrocarbon of the formula C4H8, classified under the alkene group, known for its role in the production of various polymers and butyl rubber.