An iron bar that loses 2.92kj when it’s temperature decreases from 254c to 72c

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?