What is the density (in g/L) of hydrogen gas at 21 °C and a pressure of 1670 psi? Express your answer in grams per liter to three significant figures.

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

What is the formula that this ionic compounds could form sr2+p3-o2-

Which best explains why an iceberg floats?