Lithium hydrogen carbonate, LiHCO3, decomposes when heated to form Li2O, CO2, and H2O.
How many moles of H2O are formed when 0.50 mol LiHCO3 decomposes?
Which pair of symbols below show different isotopes of the same element?
Which of the following isotopes has the greatest number of neutrons?
Which solid is least soluble in water at 298 K?
A solution of which compound gives a violet flame test?
Which type of change is different from the other four?
||Rusting of an iron nail
||Burning a piece of paper
Which units could be used to express the amount of energy absorbed or released during a chemical reaction?
At which temperature does a water sample have the highest average kinetic energy?
A portion of the phase diagram of uranium hexafluoride (UF6) is shown below.
Which statements are correct?
|| UF6 sublimes at atmospheric pressure.
||At 80 ºC and 1.5 atm, only UF6(g) is present at equilibrium.
||Both I and II
||Neither I nor II
Which substance can be decomposed chemically?