Why can't there be a temperature lower than absolute zero?

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa