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and if you dont know then dont answer ok

Which one of the following gases is not an important component of soil?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?