Search over 10,000 free study notes

2 AgI + 1 Na₂S → 1 Ag₂S + 2 NaI Both sides of the equation need to have the same number of each element. We need to make sure that the amount of one element we have on one side of th...

n(HCl) = 0.05 dm^3 x 2 mol dm^-3 = 0.1 mol 

Ratio HCl : NaOH = 1 : 1 = 0.1 mol : 0.1 mol 

c(NaOH) = 0.1 mol / 0.025 dm^3 = 0.4 mol dm^-3

Cyclohexene contains a double bond, which has a greater electron density than the system of pi-bonds present in a benzene molecule. This means that a dipole can be induced in the bromine molecule due to t...

1st step; Free Radical Subsitituition Start using Ethane UV light Chlorine/Bromine/Flourine used To prevent further subsitituiton, add and excess of Ethane.

2nd step; Nucleophilic Substutition Reac...

1. Change % of elements in to moles: 30.7 mol of S, 23.3 mol of Mg and 46 mol of O₂.
   
2. Find the mass of each of the elements: 30.7 mol / 32.06 g/mol = 0.96 g of S;  23.3 mol / 2...