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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.
Answers: 3
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The number at the end of an isotope’s name is the number.
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Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds
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Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3
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Calcium carbonate, CaCO3, decomposes upon heating according to the following equation.
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