If 28.0 grams of pb(no3)2 react with 18.0 grams of nai, what mass of pbi2 can be produced? pb(no3)2 + nai → pbi2 + nano3

27.7 g

Explanation:

i got it right on the test

- 27.7 grams of are produced.

Solution:- The balanced equation is:

let's convert the grams of each reactant to moles and calculate the grams of the product and see which one gives least amount of the product. This least amount would be the answer as the least amount we get is from the limiting reactant.

Molar mass of = 207.2+2(126.90) = 461 gram per mol

let's do the calculations for the grams of the product for the given grams of each of the reactant:

=

=

From above calculations, NaI gives least amount of , so the answer is, 27.7 g of are produced.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.