Answer:
Explanation:
Double displacement reaction: it is a chemical reaction in which the reactants exchanges their ions to form new compounds as a products.
All the reaction are example of double displacement reaction beside reaction where magnesium iodide is reacting with manganese(II) sulfate to give magnesium sulfate and manganese(IV) iodide .
In this reaction , charge on manganese have changed from 2+ to 4+. Manganese in getting oxidized. Example of an oxidation reaction. Hence, this reaction is not an example of double displacement reaction.
<span>The molar mass of the Formaldehyde is about 30 gram per mol which means it goes like 90/30 =3.
So, the molecular formula would be 3 times the empirical formula. C3H6O3.</span>
Answer:
gas
Explanation:
It is a gas because it can't be seen for long or at all in the air.