Ahollow spherical iron ball has a diameter of 15.3 cm and has a mass of 12.7 kg. assuming the whole inside the bar is spherical with the same center as the son of the ball, what is the thickness of the layer of iron surrounding the hole? the density of iron is 7.86 g/cm³.
the potential energy of the reactants is 200j.from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because...Read More
molesExplanation:According to avogadro's law, 1 mole of every substance weighs equal to molecular mass , occupies 22.4 L at STP and contains avogadro's number of particles.
To...Read More