If 0.250 g of butane (C4H10) increases the temperature of a calorimeter by 12.4 °C, and the calorimeter is calibrated at 7.28
kJ/°C, calculate the heat of combustion of fuel per gram. SHOW ALL
YOUR WORK.

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

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

What material does not melt at any temperature