Calculate the radius of a nickel atom in cm, given that Ni has an FCC crystal structure, a density of 8.90 g/cm3, and an atomic weight of 58.69 g/mol.

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

All motion is caused by force? true or false

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?