Write balanced, net ionic equations for the following precipitation, acid-base, or gas-forming reactions. include states of matter. hint: you should write the molecular equation first to predict the products. a) mixing aqueous solutions of iron (iii) chloride and sodium sulfide b) mixing aqueous solutions of sodium nitrate and ammonium phosphate c) mixing aqueous solutions of perchloric acid and lithium hydroxide d) mixing aqueous solutions of ammonia and nitric acid e) mixing aqueous solutions of nitrous acid and sodium hydroxide f) adding aqueous hydrobromic acid to solid calcium carbonate g) problems c) through f) are acid- base reactions. comment on the differences in the net ionic equations for these reactions

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa