1. Describe the components of the colorimeter/multimeter and how it works. 2. Describe how electrical resistance readings from a colorimeter/multimeter can be used to explain the relationship between concentration and absorbance.

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?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5