Answer:
![\boxed{3.966 \times 10^{24}\text{ atoms of Ag}}](https://tex.z-dn.net/?f=%5Cboxed%7B3.966%20%5Ctimes%2010%5E%7B24%7D%5Ctext%7B%20atoms%20of%20Ag%7D%7D)
Explanation:
(a) Balanced equation
Cu + 2AgNO₃ ⟶ Cu(NO₃)₂+ 2Ag
(b) Calculation
You want to convert atoms of Cu to atoms of Ag.
The atomic ratio is ratio is 2 atoms Ag:1 atom Cu
![\text{Atoms of Ag} = 19.83 \times 10^{23}\text{atoms Cu} \times \dfrac{\text{2 atoms Ag}}{\text{1 atom Cu}}\\\\= 3.966 \times 10^{24}\text{ atoms of Ag}\\\\\text{The reaction will produce }\boxed{\mathbf{3.966 \times 10^{24}}\textbf{ atoms of Ag}}](https://tex.z-dn.net/?f=%5Ctext%7BAtoms%20of%20Ag%7D%20%3D%2019.83%20%5Ctimes%2010%5E%7B23%7D%5Ctext%7Batoms%20Cu%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B2%20atoms%20Ag%7D%7D%7B%5Ctext%7B1%20atom%20Cu%7D%7D%5C%5C%5C%5C%3D%203.966%20%5Ctimes%2010%5E%7B24%7D%5Ctext%7B%20atoms%20of%20Ag%7D%5C%5C%5C%5C%5Ctext%7BThe%20reaction%20will%20produce%20%7D%5Cboxed%7B%5Cmathbf%7B3.966%20%5Ctimes%2010%5E%7B24%7D%7D%5Ctextbf%7B%20atoms%20of%20Ag%7D%7D)
The answer to this would be a physical change. Physical changes are changes that affect the form of a chemical substance, but not the chemical composition itself. Hope this helped!
Atomic radius
Explanation:
A decrease in moving from the bottom of Group 3 to the top of the group shows an increase in trend from top to bottom.
The atomic radius of elements increases from top to bottom and decreases from the bottom to the top.
The elements in group 3 are B, Al , Ga, In and Tl
- Atomic radius is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.
- Downs a group from top to bottom, atomic radii increases progressively due to successive shells being added.
- This compensates for the size reducing effect of the increased nuclear charge.
learn more:
Atomic radii brainly.com/question/5048216
#learnwithBrainly
Answer: The mass percent by volume is 101.6%
Explanation:
The solution concentration expressed in percent by volume means that the amount of solute present in 100 parts volume of solution.
It is represented in formula as :
mass percent by volume =![\frac{\text {mass of solute}\times 100}{\text {Volume of solution in ml}}\%](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%20%7Bmass%20of%20solute%7D%5Ctimes%20100%7D%7B%5Ctext%20%7BVolume%20of%20solution%20in%20ml%7D%7D%5C%25)
Given : mass of glucose = 330.1 g
volume of solution = 325 ml
Thus mass percent by volume =![\frac{330.1g\times 100}{325ml}=101.6\%](https://tex.z-dn.net/?f=%5Cfrac%7B330.1g%5Ctimes%20100%7D%7B325ml%7D%3D101.6%5C%25)
Thus the mass percent by volume is 101.6%