1. What is the molar mass of He? Please round to the nearest hundredths. 2. What is the molar mass of CH4? Please round to the nearest hundredths.

3. what is the ratio of the effusion rate of helium to methane? please round to the nearest hundredths.

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

One or more substances changing into one or more substances is an example of a

Non renewable resources like petroleum eventually