Calculate the coulombic force (in newtons) felt by an electron and a proton separated by a distance of 1 angstrom. an angstrom is 10−10 meters.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?

Which sample at stp has the same number of atoms as 18 liters of ne at stp