Given the amount of sample: 24.25 mL;
the concentration of the titrant (NaOH) = 0.1010 mol / L NaOH
the amount of the titrant used for titration = 14.83 mL
The concentration of a solution of lactic acid is determined by:
C(lactic acid in the sample) = ((0.1010 mol / L) * (14.83mL/1000) / (24.25mL/1000)
C = 0.0618 mol
Answer:
See below.
Step-by-step explanation:
The two isotopes are Cl-35 and Cl-37.
The average atomic mass (35.45 u) is closer to 35 u, so most of the atoms are Cl-35.
mass number = number of protons + number of neutrons
A = p + n
35 = 17 + n
n = 35 – 17
n = 18
∴ Most chlorine atoms contain 18 neutrons.
0.003162277M solution is acidic
A particle is defined as a small potion of matter. From its definition, then a single atom can be considered as an atom. This is because an atom is the smallest unit of matter. Also, a molecule can be considered as a particles since it is a small portion of a certain object.