How much H₂ is needed to react with 6.58 g of O₂ in this reaction?
H₂ + O₂ --> H₂O

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %