Consider the following chemical reaction at equilibrium.
H2SO4(aq)
2H+(aq) + SO42-(aq)
The addition of which compound will cause a shift in equilibrium because of a common ion effect?
O Naci
O KNO3
0 MgSO4
O FeCl2

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?

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.