13. the density of ethanol or ethyl alcohol is 0.789 grams per ml. what is the volume corresponding to 20 g. of ethanol?

15.78 mL

Explanation:

(Refer to the DMV triangle...it makes it so easy to remember)

Volume = Density x Mass

Volume = 0.789 g/mL x 20.0 g

Volume = 15.78 mL

Hope this helps!!!

-Unicorns110504

*Please mark brainliest*

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.

Heat of fusion= heat/mass  heat of fusion = 12.03kj/36 g= 0.3342 kj/g or 334.2 j/g