Balance the following chemical equations. +
C2H4 + O2 CO2 + H2O
P205 + H2O → H3PO4
Al4C3 + H2O + Al(OH)3 + CH4
NH4NO3 → N2 + O2 + H2O
3 Na2O + H2O + NaOH
) Na2SiO3 + HF + H2SiO3 + NaF
) C3H5N309 → CO2 + N2 + O2 + H2O
) NaHCO3 + H3C6H507 → CO2 + H2O + Na3C6H507
10) KCIO3 → KCI + O2

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.