HF + NaOH ---> NaF + H2O If you need 1785 g of NaF (sodium Fluoride) how many grams of HF (hydrofluoric acid) do you need?

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these