Answer: A
Explanation: it isn't surrounded by water or ice so that leaves A
Answer is: 10.
pH₁ (pond) = 7,5. Pond is bacic.
pH₂ (pond) = 6,5. Pond is acidic.
c₁( H₃O⁺) = ? concentration of hydronium ion.
c₂ (H₃O⁺) = ?
pH = -log c(H₃O⁺) ⇒ c(H₃O⁺) = 10∧(-pH).
c₁(H₃O⁺) = 10⁻⁷·⁵ = 3,2·10⁻⁸ M(mol/dm³).
c₂(H₃O⁺) = 10⁻⁶·⁵ = 3,2·10⁻⁷ M(mol/dm³).
factor = c₂(H₃O⁺)/ c₁(H₃O⁺) = 3,2·10⁻⁷/3,2·10⁻⁸ = 10 (ten times greater concentration).
Answer:
Molecular mass of β‑galactosidase = 1.16*10^5g
Explanation:
The osmotic pressure (π) is related to the molarity (M) of a solution by the following equation:
i = Von't hoff factor = 1 for non-electrolytes
R = gas constant = 0.0821Latm/mol-K
T = temperature
Based on the above equation, molarity of β‑galactosidase is:
F2 and Cl2 are non-polar because both contains same atom and they have same electronegativity.
ClF and NF3 have polar interactions because there is electronegativity difference between atoms.
Hope this helps!
