Answer:
During World War II, rationing was implemented to control the equal distribution of items in short supply. Although the primary goal of rationing was equal distribution, a secondary goal was to free valuable factory resources for war production.
Explanation:
According to
Graham's Law of Diffusion,"the rates of diffusion of two gases are inversely proportional to the square root of their Molar masses or Densities at the same pressure and temperature".
r₁ / r₂ =
![\sqrt{M2 / M1}](https://tex.z-dn.net/?f=%20%5Csqrt%7BM2%20%2F%20M1%7D%20)
Where,
r₁ = Rate of Fluorine
r₂ = Rate of Bromine
M₂ = Molar mass of Bromine = 159.8 g/mol
M₁ = Molar mass of Fluorine = 37.98 g/mol
Putting values,
r₁ / r₂ =
![\sqrt{159.8 / 37.98}](https://tex.z-dn.net/?f=%20%5Csqrt%7B159.8%20%2F%2037.98%7D%20)
r₁ / r₂ =
![\sqrt{4.20}](https://tex.z-dn.net/?f=%20%5Csqrt%7B4.20%7D%20)
r₁ / r₂ =
2.04Result: Fluorine effuses
2 times faster than Bromine gas.
Answer:
B. It contains 15.0 grams of HNO₃ per 100 grams of solution.
Explanation:
- The percent of a solute in a solution is the mass of the solute (g) per 100 g of solution.
<em>So, an aqueous solution that is 15.0 percent HNO₃ by mass means that It contains 15.0 grams of HNO₃ per 100 grams of solution.</em>