Given the following electronic configurations, identify how many valence electrons each atom has. a = b = c = identifying valence electrons

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

How many moles are in 123.0 grams of kclo4?

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.