What do we call the study of weather? A. forcasting B. meteorology

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Summarize possible ways in which phases of matter could combine to form a solution.