Answer:
Copper nitrate is a blue coloured crystal.which copper nitrate is heated it loses the water molecule and then when is further heated it decomposes to give redddish brown gas,nitrogen dioxide and oxygen.
Explanation:
A physical change is when something don't permanently change
Well as an spontaneous reaction will have a negative gibbs free energy (delta g) and a positive e cell and also the E cell is also measured in V, then your answer is the first one: ΔG = –295kJ, E°cell = +1.53 v. Hope this works
First we need to calculate the number of moles of FeS
:
number of moles = mass (grams) / molecular mass (g/mol)
number of moles of FeS
= 198.2/120 = 1.65 moles
From the chemical reaction we deduce that:
if 4 moles of FeS
produces 8 moles of SO
then 1.65 moles of FeS
produces X moles of SO
X = (1.65×8)/4 = 3.3 moles of SO
Now we can calculate the mass of SO
:
mass (grams) = number of moles × molecular mass (grams/mole)
mass of SO
= 3.3×64 = 211.2 g