Answer: Bullying is not good!
Explanation:
The whole process of titration involves finding the concentration of a solution (usually an acid or base) by adding (titrating) it to a solution(acid or base) with a known concentration.
The solution of unknown concentration (the analyte) is usually placed in an flask, while the solution of known concentration (titrant) is placed in a burette and slowly added to the flask.
To answer this question, you need to know <span>Graham's Law of Effusion/Diffusion formula. In this formula, the rate of diffusion/effusion would be influenced by the mass. As the molecule has bigger mass, the rate should be slower because it will be harder to pass the membrane. The calculation should be:</span>
<span>Rate 1 / Rate 2 = √[M2/M1]
</span>4.11/1= √[M2/2]
M2=33.78 g/mol
Answer: B) 10 ml
Explanation:
According to the dilution law,
where,
= molarity of stock solution = 1.0 M
= volume of stock solution = 2.0 ml
= molarity of dilute solution = 0.20 M
= volume of diluted solution = ?
Putting in the values we get:
Therefore, final volume reading is 10 ml
Answer:
Br-35
Cr-24
Sc- 21
Ge-32
Co-27
Br,Co,Ge,Cr,Sc
Explanation:
The atomic radius (r) of an atom can be defined as one half the distance (d) between two nucli in a diatomic molecule. Atomic radii have been measured for elements. The units for atomic radii are picometers, equal to 10−12 meters.