Explain "What happens in the past helps us forecast the future" as it relates to tsunami's in this case.

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Why is the melting of ice a physical change ?

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n