The unit of concentration in all the data is M. That is molarity or number of moles of solute per liter of solution.
The amount of sample or volume does not varies the concentration of the solution.
Then you only must compare the molarities and the greater the molarity (moles/liter) the greater the concentration or the more is concentrated the solution.
In this case the order is 0.90 M < 1.00 M < 1.45 M < 2.00 M.
And so, we get to the conclusion that the option C. is the most concentrated solution: 800 mL of 2.00 HCl.
Number of moles of NO2 = 11.5/(14+16x2) =0.250mol
Mole ratio: 4NO2 to 1O2
Number of moles of O2=0.250/4 =0.0625mol
Mass of O2 produced= 0.0625x32 =2g
Answer: B
Answer:Nitrogen dioxide reacts with the sunlight and combines with particles from smoke and soot to form industrial smog. is true
Explanation:
Answer:
Explanation:
N₂O₄(g) ⇄ 2 NO₂
N₂O₄ reacted = .04 - .0055 = .0345 mole
NO₂ formed = 2 x .0345 = .069 moles
equilibrium constant = [ NO₂ ] ² / [ N₂O₄]
= .069² / .0055
= 0.865 .
That is choice A.
The products are different from the reactants.
This may be easy to see - for example when one of the products is precipitated, like when you add BaCL2 to Na2SO4. The BaSO4 formed is insoluble in water and appears as a white precipitate.