The chemicals including in cosmetic are:-
1.Talcum Powder
2.Nanoparticles
3.Coal Tar
4.Triclosan
5.Toluene
Hope this helps you.
Answer:
11.66 L.
Explanation:
- We can use the general law of ideal gas: <em>PV = nRT.</em>
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
- If P and T are constant, and have different values of n and V:
<em>(V₁n₂) = (V₂n₁).</em>
V₁ = 25.5 L, n₁ = 3.5 mol.
V₂ = ??? L, n₂ = 3.5 mol - 1.9 mol = 1.6 mol.
<em>∴ V₂ = (V₁n₂)/(n₁)</em> = (25.5 L)(1.6 mol)/(3.5 mol) =<em> 11.66 L.</em>
Answer is: oil <span>has the highest viscosity.
</span>The viscosity<span> of a fluid is
a measure of its resistance to
gradual deformation by tensile stress and shear stress.
</span>The dynamic<span> viscosity of </span>water is 0,890 cP (centipoise) at about 25 °C.
The dynamic viscosity of acetone is 0,306 cP at about 25 °C.
The dynamic viscosity of olive oil for example is 81 cP at about 25 °C.
Answer:
<h3>Therefore, after long period of time 80kg of salt will remain in tank</h3>
Explanation:
given amount of salt at time t is A(t)
initial amount of salt =300 gm =0.3kg
=>A(0)=0.3
rate of salt inflow =5*0.4= 2 kg/min
rate of salt out flow =5*A/(200)=A/40
rate of change of salt at time t , dA/dt= rate of salt inflow- ratew of salt outflow
![dA/dt=2-(A/40)\\\\dA=2dt-(A/40)dt\\\\dA+(A/40)dt=2dt](https://tex.z-dn.net/?f=dA%2Fdt%3D2-%28A%2F40%29%5C%5C%5C%5CdA%3D2dt-%28A%2F40%29dt%5C%5C%5C%5CdA%2B%28A%2F40%29dt%3D2dt)
integrating factor
![=e^{\int\limits (1/40) \, dt}](https://tex.z-dn.net/?f=%3De%5E%7B%5Cint%5Climits%20%281%2F40%29%20%5C%2C%20dt%7D)
integrating factor ![=e^{(1/40)t}](https://tex.z-dn.net/?f=%3De%5E%7B%281%2F40%29t%7D)
multiply on both sides by ![=e^{(1/40)t}](https://tex.z-dn.net/?f=%3De%5E%7B%281%2F40%29t%7D)
![dAe^{(1/40)t}+(A/40)e^{(1/40)t} dt =2e^{(1/40)t}t\\\\(Ae^{(1/40)t})=2e^{(1/40)t}t](https://tex.z-dn.net/?f=dAe%5E%7B%281%2F40%29t%7D%2B%28A%2F40%29e%5E%7B%281%2F40%29t%7D%20dt%20%3D2e%5E%7B%281%2F40%29t%7Dt%5C%5C%5C%5C%28Ae%5E%7B%281%2F40%29t%7D%29%3D2e%5E%7B%281%2F40%29t%7Dt)
integrate on both sides
b)
after long period of time means t - > ∞
![{t \to \infty}\\\\ \lim_{t \to \infty} A_t \\\\ \lim_{t \to \infty} (80)-(79/{e^{(1/40)t}}\\\\=80-(0)\\\\=80](https://tex.z-dn.net/?f=%7Bt%20%5Cto%20%5Cinfty%7D%5C%5C%5C%5C%20%5Clim_%7Bt%20%5Cto%20%5Cinfty%7D%20A_t%20%5C%5C%5C%5C%20%5Clim_%7Bt%20%5Cto%20%5Cinfty%7D%20%2880%29-%2879%2F%7Be%5E%7B%281%2F40%29t%7D%7D%5C%5C%5C%5C%3D80-%280%29%5C%5C%5C%5C%3D80)
<h3>Therefore, after long period of time 80kg of salt will remain in tank</h3>