Calcium carbonate, CaCO3, decomposes upon heating according to the following equation. CaCO3 (s) ∆ CaO (s) + CO2 (g)

0.20 mol of CaCO3 is heated in a 2.0 L vessel. After heating, it is found that the pressure of

the gas is 44.08 kPa at 30°C.

i) Determine the number of moles of gas formed from the decomposition of CaCO3 .

ii) The mass of CaCO3 left after the reaction was completed

iii) The partial pressure of hydrogen gas in the vessel when 0.10 mol of hydrogen gas is added

to the vessel at the same temperature.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.