How to provide observations of a chemical reaction and then find the moles of each reactant then the limiting reactant.


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A 0.150 g sample of solid lead 2 nitrate is added to 125 mL of 0.100 M sodium iodid solution. Assume no change in the volume of the solution.

You have given mass of Pb(NO3)2 use its molar mass to find the moles
Moles = mass in grams / molar mass
To find the mole of sodium iodide solution use the formula
Molarity = moles of solute / volume of solution in liter
You have given molarity and volume in ml convert it to liter.

T find the liming reactant first write the complete balanced reaction and the do stoichiometry ,a limiting reactant is one the produces lesser amount of product.