A bus travels 100 km in 2 hours, 50 km in .25 hours, 250 km in 3 hours and 75 km in .5 hours. What was the average speed of the bus?

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

Draw the lewis dot structure for each of the following polyatomic ions

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.