Calculate the mass percent composition of each of the following: a. MgF2, magnesium fluoride
b. Ca(OH)2, calcium hydroxide
c. C4H2O4, erythrose, a carbohydrate
d. (NH4)3PO4, ammonium phosphate, fertilizer
e. C17H19NO3, morphine, a painkiller

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.