A piece of copper had mass 3.4 grams before a reaction and 1.79 grams after the reaction. How many moles of copper reacted? (HINT: 3.4g Cu – 1.79 g Cu = 1.61 g Cu used)

Water is important for the of cells. a: size, shape, and temperature b: temperature, color, and odor c: color, odor, and size d: shape, temperature, and color

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light