The mass for of aluminum that is produced by the decomposition of 5.0 Kg Al2O3 is 2647 g or 2.647 Kg
calculation
Write the equation for decomposition of Al2O3
Al2O3 = 2Al + 3 O2
find the moles of Al2O3 = mass/molar mass
convert 5 Kg to g = 5 x1000 = 5000 grams
molar mass of Al2O3 = 27 x2 + 16 x3 = 102 g/mol
moles =5000 g/ 102 g/mol = 49.0196 moles
by use of mole ratio between Al2O3 to Al which is 1:2 the moles of Al = 49.0196 x2 =98.0392 moles
mass of Al = moles x molar mass
= 98.0392 moles x 27g/mol = 2647 grams or 2647/1000 = 2.647 Kg
Answer:
Carbonates are widely used in industry, such as in iron smelting, as a raw material for Portland cement and lime manufacture, in the composition of ceramic glazes, and more.
Water could be made
to boil at 105 degrees Celsius instead of 100 degrees Celsius by taking
the sample to a higher altitude. Pressure is directly proportional to
temperature. So when you bring water into higher altitude, you are increasing
the external pressure and therefore increase the boiling point.
Answer:
the relation between Kp and Kc is
![\colorbox{red}Kp=Kc{[RT]}^{∆n}](https://tex.z-dn.net/?f=%20%5Ccolorbox%7Bred%7DKp%3DKc%7B%5BRT%5D%7D%5E%7B%E2%88%86n%7D)
where
∆n=no.of moles of gaseous product - no.of moles of gaseous reactant in the balanced chemical equation.
R=universal gas constant
T=temperature.
