112 L/ 16 L = 7 mol O2
7 mol O2 x 2 mol Fe2O3/ 3 mol O2 = 4.67 mol Fe2O3
lmk if its right
Atoms tend to form bonds because one atom may have more attraction to electrons than the other<span />
Answer:
a) [HA] = 0.012 M; [A-] = 4 E-3 M
b) pH = 3.47
Explanation:
neutralization reaction:
∴ mol HA = 0.0015 mol
∴ mol A- = 0.0005 mol
∴ Vsln = 125 mL = 0.125 L
a) approx. concentration:
⇒ [HA] = 0.0015 mol / 0.125 L = 0.012 mol/L
⇒ [A-] = 0.0005 mol / 0.125 L = 4 E-3 mol/L
b) pH = ?
∴ pKa = 3.90 = - Log Ka
⇒ Ka = 1.26 E-4 = ([H3O+]*( 4 E-3 + [H3O+])) / (0.012 - [H3O+])
⇒ 1.512 E-6 - 1.26 E-4[H3O+] = 4 E-3[H3O+] + [H3O+]²
⇒ [H3O+]² + 4.126 E-3[H3O+] - 1.512 E-6 = 0
⇒ [H3O+] = 3.3866 E-4 M
⇒ pH = 3.4702
Answer:
There are lots of methods.
Explanation:
Usually, animals like pandas live a shorter lifespan in the wild than in captivity. A little fact, there is only one brown panda in the entire world, so it would be very, very rare to see one. The Smithsonian National Zoo, for example, are working to protect pandas, as well as other species.
Answer:
It contains 0.105 mole cu
Explanation:
