Which cell contains hemoglobin? plant cells or animals cells?

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.

Convection is da answer my dood

The answer is c.  h+  and oh−  react to form water (h2o). i just took the test and i got it right. hope this !