What is the percent composition by mass of nitrogen in nh4oh?

Word equation for k(s) +h2o(l) yield koh (aq) + h2

Which statement best describes what happens when molecular compounds melt

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth