Answer:
The right answer is V = 17.2 mL
Explanation:
- Knowing that the the relation between No. of moles and concentration:
No. of moles = C * V
where,
C is the concentration in morality and
V is the volume in liter
so you can calculate the volume using:
V = (No. of moles / C) = (0.0131 mol / 0.763 mol/L)
V = 0.0172 L
- Then yo need to convert the volume from Liter to milliliter
V = 0.0172 L * (1000 mL / 1 L)
V = 17.2 mL
So, the right answer is V = 17.2 mL
Answer:
Cs > Ba > Bi > Hf > Ta
Explanation:
The atomic radius of a chemical element defined as the distance between nucleus and electron from the center.
<u>The atomic number and atomic radius of given elements are:</u>
<u>Barium (Ba):</u>
Atomic number - (56)
Atomic radius - 268 pm
<u>Caesium (Cs) </u>
Atomic number - 55
Atomic radius - 343 pm
<u>Hafnium (Hf):</u>
Atomic number - 72
Atomic radius - 225 pm
<u>Bismuth (Bi):</u>
Atomic number - 83
Atomic radius - 230
<u>Tantalum (Ta):</u>
Atomic number - 73
Atomic radius - 220 pm
According to the given atomic radius the decreasing order of atomic radius is Cs > Ba > Bi > Hf > Ta.
Caesium has highest atomic radius among all even though lowest atomic number because the force of attraction between the nucleus and the outermost electron is low and outermost electron are loosely held.
Barium (Ba) has lower atomic number than Bismuth (Bi) but still atomic radius of Barium is high because moving across the periodic table atomic radius decreases as force of attraction between nucleus and outer electrons is high.
Bismuth (Bi) has higher atomic number that Hafnium (Hf), atomic radius of Bi is more than Hf.
Tantalum (Ta) have higher atomic number than Hafnium (Hf) but still have lower atomic radius as as force of attraction between nucleus and outer electrons is high.
Hence, the decreasing atomic radius is Cs > Ba > Bi > Hf > Ta.
Property of water:
Due to the water's ability to stick together (Cohesion), droplets form instead of being spread evenly.
The strong cohesion between water molecules:
- Cohesion is defined as the firm attraction between molecules of the same type.
- This characteristic of water is due to hydrogen.
- Water molecules are maintained intact by the strong connections that hydrogen forms with one another.
- Since hydrogen bonds are more attracted to one another than to the wax surface, they tend to bead when sprayed on it.
- Additionally, the surface tension of water is very strong. This indicates that the molecules on the water's surface are not being drawn in by other molecules in the water's interior due to comparable molecules surrounding them on all sides.
- These molecules tightly attach to one another while only slightly adhering to the other medium. These water drops are rounded due to surface tension, which allows them to cover the least amount of surface area.
Learn more about cohesion here:
brainly.com/question/1928484
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The scientific method use, and thus going "for, the idea of following the ideal of scientific evidence.
Chlorine (CL) would be the answer