Copper has a density of 8.91 g/cmº. A coil of pure copper wire has a mass of 25.0 g. What is the volume in cm of this copper sample? Report your answer to three significant digits!
cm3

How many moles of oxygen react with 12 moles of aluminum

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m