Answer:
See explanation
Explanation:
11/5 represents the mass number and the number of protons that boron has. 11 means that the total mass number, or the combined number of protons and neutrons is 11, while the 5 represents the number of protons. This means that the isotope must have 11-5=6 neutrons. Hope this helps!
Pretty sure its Physical Changes
No chemical reaction is happening.
<u>Answer: </u>The molar mass of solute is 115 g/mol.
<u>Explanation:</u>
Elevation in the boiling point is defined as the difference between the boiling point of the solution and the boiling point of the pure solvent.
The expression for the calculation of elevation in boiling point is:
OR
......(1)
where,
Boiling point of pure solvent (benzene) =
Boiling point of solution =
i = Vant Hoff factor = 1 (for non-electrolytes)
= Boiling point elevation constant =
= Given mass of solute = 10 g
= Molar mass of solute = ? g/mol
= Mass of solvent = 200 g
Putting values in equation 1, we get:
Hence, the molar mass of solute is 115 g/mol.