Bernando draws this model and claims that it shows an atom of lithium. Is he correct? Explain why or why not?
Plz help

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these