A0.797 g sample of β‑galactosidase is dissolved in water to make 0.199 l of solution, and the osmotic pressure of the solution at 25 ∘c is found to be 0.853 mbar. calculate the molecular mass of β‑galactosidase.

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:

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.