2) When lead (II) nitrate reacts with sodium iodide, sodium nitrate and lead (II) iodide are formed.

a. Write the balanced equation for the reaction.

b. If I start with 25.0 grams of lead (II) nitrate and 15.0 grams of sodium iodide, how many grams of sodium nitrate can be formed?

c. What is the limiting reagent in the reaction described in problem 2?

d. How many grams of lead (II) iodide is formed?

e. How many moles of the excess reagent will be left over from the reaction?

f. If 6 grams of sodium nitrate are formed in the reaction, what is the percent yield of this reaction?

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Idon't see the pic?

Sorry i think the answer is b

Answer:

5.6⋅10−^19  j

do you need the explaination?