Pls Awnser I also have other questions on my account worth 100 points!Covalent network solids such as graphite, quartz, and diamonds Are all made entirely of carbon atoms, Are held together by ionic bonds , have very high melting and boiling points, Are soft and slippery

The formula is (nh4)2co3

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Answer(d) unstable compounds that convert to acetals in the presence of alcohol and an acid; (b) semiacetals produced by alcohol subtraction from ketone;

Ithink the correct answer is 3