Which of the following is not a property of a covalent bond?

can be gases, liquids, or solids at room temperature.

have high melting points and high boiling points

are often soluble in water or other solvents

our poor electrical conductors

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2