How many moles are represented by each of these samples? (a) 170.0 g Fe2O3
(b) 12.0 mg NO2
(c) 1.6 ✕ 1016 molecules of BF3

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

Explain that newton first law,second law and third law of motion?

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?