Answer:
Percentage of gold = 84.6%
Explanation:
Suppose the jewelry has x g of gold and y g of silver
The mass of both is the total mass of the jewelry then:
x + y = 11.54
And as the problem says the total volume is the sum of both volumes.
volume = mass / density
Solving the system you get:
x = 9.764 g
y = 1.776 g
The percentage of gold in the jewelry is:
Explanation:
Formula for compressibility factor is as follows.
z =
where, z = compressibility factor for helium = 1.0005
P = pressure
= molar volume
R = gas constant = 8.31 J/mol.K
T = temperature
So, calculate the molar volume as follows.
=
= 0.0056
As molar mass of helium is 4 g/mol. Hence, calculate specific volume of helium as follows.
=
= 0.00139
= 0.00139
= 1.39
Thus, we can conclude that the specific volume of Helium in given conditions is 1.39 .