Paper chromatography in the exp. separation of chloride and bromide and iodied
Pls help me with these quesetions
Especially 2

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml