+ For the reaction Pb(NO3)2 + 2KI Pbl2 + 2KNO3, how many moles of lead iodide are
produced from 237.1 g of potassium iodide?
Select one:
O a. 0.714
Ob. 5.47e4
O c. 1.54
Od 1.54

0.714 moles of will be produced from 237.1 g of potassium iodide

Explanation:

To calculate the moles :

The balanced chemical reaction is:

According to stoichiometry :

2 moles of produce =  1 mole of

Thus moles of will require=  of

Thus 0.714 moles of will be produced from 237.1 g of potassium iodide

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.