How many moles of water are produced if 5.43 mol pbo2 are consumed

this is a stoichiometry based problem

We can solve this by just knowing the balanced chemical equation.The reaction where PbO2 is used and water is produced is

Pb + PbO2 + 2H2SO4 > 2PbSO4 + 2H2O

This is reaction in lead storage battery

so here as per balanced equation one mole of PbO2 is consumed giving two moles of water

so if 5.43 moles of PbO2 we will get = 2 X 5.43 moles of water = 10.86 moles

what's the

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.