If the concentration of cholesterol is 238mg/100ml:
238 mg ==> 100ml
2380 mg (or 2.38g) ==> 1000ml (1L)
So the concentration will be 2.38 g/L of cholesterol.
if the volume is 5.2 L, the total grams of cholesterol would be :
m = C . V = 2.38g/L * 5.2 L = 12.376 grams of cholesterol.
Answer is: the molar mass of gas is 82.83 g/mol.
m(gas) = 55.50 g; mass of gas.
V(gas) = 15.0 L; volume of gas.
Vm = 22.4 L/mol; molar volume of gas on STP.
n(gas) = V(gas) ÷ Vm.
n(gas) = 15 L ÷ 22.4 L/mol.
n(gas) = 0.67 mol; amount of gas.
M(gas) = m(gas) ÷ n(gas).
M(gas) = 55.5 g ÷ 0.67 mol.
M(gas) = 82.83 g/mol.
The change in internal energy of the system is 1644 Joules.
<u>Given the following data:</u>
To find the change in internal energy of the system, we would apply the First Law of Thermodynamics.
Mathematically, the First Law of Thermodynamics is given by the formula:
![\Delta E = Q - W](https://tex.z-dn.net/?f=%5CDelta%20E%20%3D%20Q%20-%20W)
Substituting the values, we have:
![\Delta E = 0.764(10^3) - (-880)\\\\\Delta E = 764 + 880](https://tex.z-dn.net/?f=%5CDelta%20E%20%3D%200.764%2810%5E3%29%20-%20%28-880%29%5C%5C%5C%5C%5CDelta%20E%20%3D%20764%20%2B%20880)
<em>Change in internal energy, </em>
<em> = </em><em>1644 Joules.</em>
Therefore, the change in internal energy of the system is 1644 Joules.
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