The Ka of hydrofluoric acid, HF, is 7.2 x 10-4. What [F-}/[HF] ratio is necessary to make a buffer of 2.84? a) 0.50
b) 2.0
c) 2.5
d) 1.4 x 10-3
e) 7.1 x 102

Ifound this on google “these two compounds have a different ionic structure. caesium ion is larger in size when compared to the sodium ion. the charge gets more area to spread out evenly. so caesium chloride has a lower melting point than sodium chloride.” i hope this you for what your looking for

Mg-26 and mg-24 are pair of isotopes. isotopes are defined as atoms of the same element having same atomic number but different mass number. i hope that was .

The second and last option are the answers