Explanation:
Formula to calculate refractive index of n is as follows.
n = 
where, 
= mole fraction of A
= mole fraction of B
= refractive index of A
= refractive index of B
Hence, putting the given values into the above formula as follows.
n =
1.5248 = 
........ (1)
Also, it is known that 
= 1
and, 
......... (2)
Now, put equation (2) in equation (1) as follows.
1.5248 = 
1.5248 = 
= 0.467
And, the value of is calculated as follows.
= 
= 0.533
Hence, mole percentage of A will be calculated as follows.
Mole % of A = 
= 
= 46.7%
Thus, we can conclude that the mole percent of A in their mixture is 46.7%.
Answer:
Explanation:
1 moles Gallium to grams = 69.723 grams
2 moles Gallium to grams = 139.446 grams
3 moles Gallium to grams = 209.169 grams
4 moles Gallium to grams = 278.892 grams
5 moles Gallium to grams = 348.615 grams
6 moles Gallium to grams = 418.338 grams
7 moles Gallium to grams = 488.061 grams
8 moles Gallium to grams = 557.784 grams
9 moles Gallium to grams = 627.507 grams
10 moles Gallium to grams = 697.23 grams
Answer:
CuFeS2
Explanation:
Calculate the moles of each substance by doing moles= mass/relative atomic mass. you should get 0.25 moles of copper and iron and 0.5 moles of sulfur. Then divide all of those numbers by 0.25 (as its the lowest value) you should get 1 for copper and iron and 2 for sulfur. This represents the ratio that they are in within the mineral.
The source for the ultraviolet (UV) radiation in Earth's atmosphere is the Sun. Despite the ultraviolet radiation, the Sun <span>emits also other kinds of electromagnetic </span>radiation<span>, visible light (99% of its </span>rays ) and <span>infrared </span>rays (also known as heat). The UV radiation<span> is absorbed in the ozone layer of the atmosphere before reaching the Earth.</span>
