2.3. ethanol(common alcohol) is a compound
with a melting point of -114°c and boiling
point of 78°c. what is it's physical state at
room temperature 20°c?

At 20°C, Ethanol (not common alcohol) is in a liquid state.

Explanation:

At 20°C (degrees Centigrade/Celsius), ethanol is above the point it goes solid, so it may not be solid. However, it is below 78°C, so it is not a gas nor is it plasma. Therefore, it is in the liquid state.

Ethyl Alcohol is known for use in drinking, Isopropyl Alcohol is known to be a common disinfectant, and Ethanol is known for use in car fuel. Therefore, there is no common alcohol; many forms of alcohol have everyday uses.

pla·gia·rism

/ˈplājəˌrizəm/

learn to pronounce

noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.