For the reaction represented by the equation Pb(NO3)2 + 2KI → PbI2 + 2KNO3, how many moles of lead iodide are produced from 3.0 moles of potassium iodide when Pb(NO3)2 is in excess?

1.5mole

Explanation:

The equation for the reaction is given below:

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

From the equation,

2moles of KI produced 1mole of PbI2.

Therefore, 3moles of KI will produce = 3/2 = 1.5mole of PbI2.

Therefore, 1.5mole of Pbl2 are produced

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)