Solution:
Molality measures the concentration of a solute in a solution, defined by the amount of solute per specific mass of solvent.
Thus,
Molality = moles of solute / kg of solvent.
Therefore, kg of solvent = moles of solute / molality.
moles of solute = mass / molar mass
= 25.31 g / 101.1 g/mole
= 0.2503 mole.
kg of solvent = 0.2503 mole / 0.1982 m
= 1.263 kg
= 1263 g.
This is the final answer.
The formula for a monoprotic acid can be represented as HA, and its reaction with a base is shown as follows: HA + NaOH ---> NaA + H₂O. The stoichiometry between the acid and the base is 1:1. At the point of neutralization, the moles of HA equals the moles of the base. The moles of NaOH that reacted can be calculated as 0.100M / 1000 mL/L x 30.0 mL = 0.003 mol. Consequently, the moles of HA that reacted equal 0.003 mol. The mass of the acid is 0.384 g, yielding a molar mass of 0.384 g / 0.003 mol = 128 g/mol.
Answer:
6
Explanation:
H6 indicates the presence of helium atoms, with 6 representing their quantity.
Atoms have their protons and neutrons situated in the nucleus.
Electrons orbit in the outer shells, also known as orbitals.
Subatomic particles, comprising protons, neutrons, and electrons, reside within the atoms.
Answer:
= - 0.38 eV
Explanation:
According to Bohr's equation for the energy corresponding to an electron in the nth orbital,
E = -13.6 
Where E represents energy level in electron volts (eV)
Z symbolizes the atomic number of the atom
n denotes the principal quantum number
For n = 6
⇒ E = -13.6 × 
= - 0.38 eV
I hope this information helps.
