How many moles are contained in 6.55 x 10^23 formula units of KNO3?

Which of the following are correct values for the ideal gas laws constant r

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.

The ammonia molecule in the diagram has the observed bond orientation because