How many solutions are in the equation below 18x 216 18 x 12?
What're people thinking about: "Equation Solutions":
Is that the one where you measure the amount of precipitate formed, and see how long it takes before the solution becomes opaque? we timed how long it was before you couldn't see a big black cross through the solution.
i think this is the equation-->
s2o32âˆ’(aq) + 2h+(aq) â†’ s(s) + so2(g) + h2o(l)
(sorry it's hard to see where the numbers/charges should go, its here on wikipedia if you want...)
The local freestream velocity can be determined using a cfd or by solving laplace's equation. some assumptions about the bl thickness can be used to make the solution more accurate. once you have the local freestream vel. you can use that in your bl calculations. otherwise just use 250m/s as the freestream velocity.
Thermal decomposition is the breaking down of a compound into simpler substances using heat. however, some metal compounds do not break down into the pure metal under thermal decomposition.
to get the pure metal, a reduction reaction must occur, i.e. a reaction in which there is loss of oxygen, gain of electrons, or gain of hydrogen. a reducing agent, such as hydrogen gas, can be used to liberate some metals from simple compounds.
cuco3 (s) ----> cuo (s) + co2 (g)
this is the equation for the reaction that occurred when copper carbonate was heated.
you may also come across
(aq) aqueous (dissolved in solution)
hope that helps some :)
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