Help . Please. What happens when something is in brackets when you are balancing the equations ?
the brackets just seperate a molecule or atom. kinda hard to explain but in the example you've given it means that there are 2 NO3 molecules. hope i helped
the letters are merely the states of rely - stable - liquid - gasoline - aqueous. they might notably a lot be surpassed over, yet ask your chem instructor as each and each chem instructor has a various opinion.
the NO3 is the polyatomic ion nitrate. when working with polyatomic ion, you cannot change the subscripts in them so in order to say that you have more than 1 of a polyatomic ion, you have to use parenthesis like the example you gave in the example you gave, the would be 2 polyatomic ions (nitrate ions). hope that helps!!. good luck!
In this case means that Cu is connected to two NO3 groups NO3-Cu-NO3 simillar to H2 when you are balancing reaction you have to consider 2 groups ie Cu(NO3)2 + H2S -CuS + 2HNO3 {Cu NO3 NO3} + {H H S} -{Cu S} + {H NO3 H NO3}
The bracket states how many atoms of a specific element you have. The number of atoms MUST be equal on BOTH sides. Refer to Example: Ca(OH)2 ---CaO + H2O Reactant Side: Ca (1 atom), O (2 atoms), H (2 atoms) Product Side: Ca (1 atom), O (2 atoms), H (2 atoms)
