C. till .....................................................................
Moles of ZnSO4 = Mass/Mr
= 2/(65.4 + 32.1 + (16 x 4))
= 0.012383.... mol
Since there is no chemical equation provided, I will assume that the ratio of ZnSO4:Li2CO3 is 1:1
Therefore there are 0.012383 mil of Li2SO4 as well
So the mass would be Moles x Mr = 0.012383.... x ((6.9 x 2) +32.1 + (4x16))
= 1.360 g of Li2SO4 produced
There are 1.22 grams of He in the mixture. The mixture contains 0.304 moles of He, 0.250 moles of N2 and 0.250 moles of O2. Since the mixture of gases are at standard temperature and pressure, the total moles of the mixture equivalent to 18.0 L is 0.804 moles.
Further Explanation:
At standard temperature and pressure of 0°C and 1.00 atm, the molar volume of gas is 22.4 L.
From this, the total moles of the mixture can be derived using the solution below:
![total \ mol \ of \ gases \ = 18.0 \ L (\frac{1 \ mol \ }{22.4 \ L})\\](https://tex.z-dn.net/?f=total%20%5C%20mol%20%5C%20of%20%5C%20gases%20%5C%20%3D%2018.0%20%5C%20L%20%28%5Cfrac%7B1%20%5C%20mol%20%5C%20%7D%7B22.4%20%5C%20L%7D%29%5C%5C)
Therefore, the total moles of gases in an 18.0 L mixture at STP is:
![\boxed {total \ moles \ of \ gases \ = 0.804\ mol}](https://tex.z-dn.net/?f=%5Cboxed%20%7Btotal%20%5C%20moles%20%5C%20of%20%5C%20gases%20%5C%20%3D%200.804%5C%20mol%7D)
By algebra, the moles of He may be solved using the given moles of the other two gases: 0.250 mol N2 and 0.250 mol O2.
![0.804 \ mol = 0.250 \ mol \ N_{2} \ + 0.250 \ mol \ O_{2} + x \ mol \ He\\\boxed {mol \ He \ = 0.304 \ mol}](https://tex.z-dn.net/?f=0.804%20%5C%20mol%20%3D%200.250%20%5C%20mol%20%5C%20N_%7B2%7D%20%5C%20%2B%200.250%20%5C%20mol%20%5C%20O_%7B2%7D%20%2B%20x%20%5C%20mol%20%5C%20He%5C%5C%5Cboxed%20%7Bmol%20%5C%20He%20%5C%20%3D%200.304%20%5C%20mol%7D)
0.304 moles of He is equal to 1.22 grams of He.
Learn More:
- Learn more about Boyle's Law brainly.com/question/12968820
- Learn more about Gay-Lussac's Law brainly.com/question/6534668
- Learn more about Ideal Gas Law brainly.com/question/12935899
Keywords: molar volume, STP, stoichiometry
Answer: It's C
Explanation:
A solution is defined as a homogeneous mixture in which solute particles are evenly distributed into the solvent.
A solution is a clear solution whose particles cannot be separated out as they are all present in same state.
On the other hand, a mixture in which particles are unevenly distributed into the solvent is known as a heterogeneous mixture.
For example, sand in water is a heterogeneous mixture.
Particles of a heterogeneous mixture can be separated out generally through filtration. This is because these particles are not present in same state.
Thus, we can conclude that the statement a mixture having a uniform composition where the components can't be seen separately and all components are in the same state, best describes a solution.
Permafrost soil (gelisol) is b) fragile.