9. An atom's electron configuration is shown here. How many electrons are in that atom?
1s22s22p63s4
8
14
4
22

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.