A chemist heats four samples of the same substance to the following temperatures: Sample 1 to 30°C; Sample 2 to 15°C; Sample 3 to 45°C; Sample 4 to 35°C. The molecules of which sample will have the greatest motion?
A. Sample 1
B. Sample 2
C. Sample 3
D. Sample 4

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Why do lunar and solar eclipse not happen every month

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?