7. Larutan asam di bawah ini yang akan memiliki pH paling
rendah adalah ...
HCN 1 M (Ka = 6 x 10 -10)
H2S 0,1 M (Ka = 1 x 10 - 7)
Ca(OH)2 0,1 M
Ba(OH)2 0,2 M
NaOH 0,1M​

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

What will most likely happen when two bromine atoms bond together?

Which of the following words describe the reality that the universe looks the same from various perspective