determine the percent composition of the following compound: Pb(CH3COO)2 can you work it out please !

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Ineed to find the answer of this question because i dont understand it