Tectonic plate shifting...
If you cut the cube and keep all the pieces you are causing only physical change
Answer:
Weak acid - strong base
Explanation:
H₃PO₄ → Phosphoric acid.
This is a weak that has three dissociations in order to give hydronium to the medium and to produce the phosphate anion. The equations are:
H₃PO₄ + H₂O ⇄ H₃O⁺ + H₂PO₄⁻ Ka1
H₂PO₄⁻ + H₂O ⇄ H₃O⁺ + HPO₄⁻² Ka2
HPO₄⁻² + H₂O ⇄ H₃O⁺ + PO₄⁻₃ Ka3
As the H₃PO₄ is a weak acid then the water behaves as a strong base.
If we follow the Brownsted Lory idea, water becomes a strong base cause it receives the H⁺ from water, then the H₃O⁺ becomes the conjugate weak acid.
Anions from the H₃PO₄, diacid phosphate and monoacid phosphate assume the rol of the conjugate strong base, they all recieve proton but this is a special case, because both anions can recieve all release the proton. That's why, they also are amphoteric
Answer:
2.94g/L
Explanation:
First, let us derive an expression for the density, using the ideal gas equation:
PV = nRT (1)
V = nRT/ P (2)
Recall:
Number of mole(n) = mass(m)/Molar Mass (M)
n = m/M
Substituting the value of n into equation 2:
V = nRT/ P
V = mRT/ MP
Now Divide both side by m
V/m = RT/ MP
Inverting the above equation, we have:
m/V = MP/RT
But Density = m/V
Density = MP/RT
From the question given, we obtained the following data:
P = 2.3atm
T = 305K
Molar Mass of O2 = 16x2 = 32g/mol
R = 0.082atm.L/K /mol
Density = (32x2.3)/(0.082x305)
Density = 2.94g/L