Pb(NO3)2 (aq) + Nal (aq)
Pb12 (s) +
NaNO3(aq)
a)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?
b)What is the limiting reagent in the reaction described in
problem a?
c) How many grams of lead(II) iodide is formed?
d)How much of the nonlimiting reagent will be left over
from the reaction in the problem a?

first one is the correct answer

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)