PLEASE PLEASE PLEASE HELP A student observed two substances labeled substance A and substance B. She then mixed them together and made a third substance labeled substance C. Below are her observations of the three substances. How would you classify substance C? element heterogeneous mixture homogeneous mixture compound

At stp, what is the volume of 1 mole of co2?

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Which element is the least metallic between cadmium, silver, zinc, or iron?