I don’t know how to help you but good luck
Answer:
iron oxide. aka. oxygen
Explanation:
Rust is the result of a chemical reaction between iron and oxygen, otherwise known as iron oxide. Since steel wool -- and steel in general -- is largely made of iron, steel wool is prone to rust if it doesn't have a rustproof coating on it. The actual reaction that creates rust happens when two iron atoms mix with three oxygen atoms in water; the oxygen bonds to the metal, and a new compound is formed.
Chemical property is the property of the substances that describes the ability of the substance to involve in chemical reactions. Physical property is that which does not change the chemical composition of the substances. The following properties of water that it is transparent and tasteless in its pure form and it freezes at a temperature of are physical properties as they simply indicate the change in physical state without any change in chemical composition of water.
The other two properties that water reacts with halogens to form oxygen gas as one of the products and water decomposes to form hydrogen and oxygen are chemical properties as the chemical composition of water changes in the given reaction.
Therefore the correct answer is b. 1 and 4
The image provided shows the full reaction and the products of the reaction.
By heating 3-sulfolene, the compound breaks down into SO₂ gas and butadiene. The diene then reacts with the fumarate which is a dienophiles and these two species then undergo a Diels-Alder reaction. The diene reacts with the alkene portion of the fumarate and forms a new 6-membered cyclohexene ring. Since we have trans-fumarate, that leads to two potential products. We form a stereoisomer with stereocenters (1S, 2S) and another with stereocenters (1R, 2R). These two isomers formed are enantiomers. Therefore, the overall product is a racemic mixture of the two enantiomers.
While each individual enantiomer is optically active, the overall product would be racemic and therefore, not optically active.