Calculate the concentration of a 35.24ml Ca(OH)₂ Solution If 28.35ml of 1.21m HNO3 is needed to tritate
to the equivalence point.
Ca(OH)2 + 2HNO3Ca(NO3)2
+ 2H20

Answer) by studying proton collisions hope this : )

C. definite shape, definite volume. that is a solid.

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.