Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant is left

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.

What is the best describtion of the side of the moon that faces earth?