11. A 0.0809 g sample of a purified organic acid was dissolved in an alcohol-water mixture and titrated with coulimetrically generated hydroxide ions. With a current of 0.0441 A, 266 s was required to reach a phenolphthalein endpoint. Calculate the equivalent weight of the acid.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

8. what happens to matter during a chemical reaction