This means that the reaction in question takes place in an aqueous solution. Even when water does not take part in a reaction, many things - most things, actually - will be more chemically active if dissolved in water, than in solid form.
There is no such compound as silicon sulfate. Do you mean silicon sulfide, SiS2 ?
The number 3 in the chemical formula CaCO3 indicates that there are three oxygen atoms in one molecule of calcium carbonate.
PCl3 is the formula. This is the compound we know as phosphorus trichloride.
coke mean Carbon is in it's natural state... C
If you mean the neutral gas Krypton , its symbol is Kr.
Manganese (Mn) above an arrow in a chemical equation typically means that the element is a catalyst for the reaction. This indicates that manganese is involved in the reaction mechanism, but is not consumed in the overall reaction and is regenerated at the end.
it means that manganese is a catalyst in the reaction
The compound above the arrow in a chemical reaction signifies the catalyst or condition used to facilitate the reaction. It indicates that the reaction requires the presence of that specific compound to proceed or to increase the speed of the reaction.
The name of the arrow in a Chemical Equation is called the yield.
In a chemical reaction, the arrow typically indicates the direction in which the reaction is proceeding. It shows the transformation of reactants into products. The arrow points from the reactants to the products in a chemical equation.
The symbol is referred to as "delta" and means that the reaction occurs under heating conditions.
I expect you mean, toluene, whose chemical formula is C7H8. Please see the link.
The symbol o written above a reaction arrow indicates that the reaction is carried out under an oxygen atmosphere.
Well, tne chemical formula is MnO2. If you mean the name of it, that is manganese dioxide.
I assume that you mean sodium chloride, in which case the chemical formula is NaCl.
reacting to form
If you mean potassium Cyanide, the formula is KCN