Answer: 7.79 grams of ethanol were put into the beaker.
Explanation:
To calculate the mass of ethanol, we use the equation:

Density of ethanol = 0.779 g/mL
Volume of water = 10.00 mL
Putting values in above equation, we get:

Thus 7.79 grams of ethanol were put into the beaker.
Answer:
False
Explanation:
It is important to give exact measurements.
Workplace Hazardous Materials Information System is the answer to this question. Hope it helps :)
It is called phosphorescent substances.