Write dissociation equations to describe what would occur when each of the following ionic compounds dissolve in water. a. NaBr

b. K2SO4

c. Pb(C2H3O2)2

d. NH4NO3

e. LiI

f. HCl

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which metal exist in liquid state and can be cut with knife ?