Answer:Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron(III) oxide, Fe 2O 3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.
PV=nRT<=> P=nRT/V=2,40*R*(273+97)/45 atm.
Calculate it. R is a number that is given, find it and use your math to solve.
sorry, but im just learning some chemistry myself so i only know that the 1st blank is: Ph
hope you can find what the other 2 blanks are
Answer: option A. Ba(OH)2
and option D. CsOH
Explanation: Arrhenius define a base as a compound that dissolves in water to produce hydroxide ion(OH-)