Answer: 236.7 grams.
Step-by-step explanation:
Hi, to calculate the weight of the ethyl alcohol we simply have to multiply its density (0.789 g/mL) by the volume filled by it (300mL)
Mathematically speaking:
Weight = (0.789 g/mL) (300mL) = 236.7 g
The weight of the ethyl alcohol is 236.7 grams.
Feel free to ask for more if needed or if you did not understand something.