Calcula el Tanta por ciento en peso de soluto
Following reaction takes place between LiOH and HNO3
LiOH + HNO3 → LiNO3 + H2O
Thus, 1 mole of LiOH reacts with 1 mole of HNO3 to form 1 mole of LiNO3.
Now,
Number of millimoles of LiOH consumed = <span>36.90 X 0.100 = 3.690
</span>∴Number of millimoles of HNO3 present = 3.690
<span>
Now, Molarity of HNO3 = </span>
![\frac{\text{number of millimoles of HNO3}}{\text{volume of solution (ml)}}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%5Ctext%7Bnumber%20of%20millimoles%20of%20HNO3%7D%7D%7B%5Ctext%7Bvolume%20of%20solution%20%28ml%29%7D%7D%20)
=
![\frac{3.690}{50}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3.690%7D%7B50%7D%20)
= 0.0738 M
Thus, <span>
molarity of the HNO3 solution is 0.0738 M</span>
Answer:
The statue of liberty was made of copper. Copper is extremely weather-resistant. It will gradually oxidize copper chloride, which is greenish in
Explanation:
Because it copper and it greenish
<span>50 quarts of 60% solution and 50 quarts of 40% solution.
You want a total of 100 quarts, so we'll use the following expressions
x = amount of 60% solution
(100 - x) = amount of 40% solution.
The total amount of alcohol will be
0.6x + 0.4(100-x)
We want the final result to be 100 quarts of 50% solution, so we express that as
0.5 * 100
Now we set them equal to each other, and solve for x
0.6x + 0.4(100-x) = 0.5 * 100
Distribute the .4
0.6x + 0.4*100 - 0.4x = 0.5 * 100
0.6x + 40 - 0.4x = 50
Subtract 40 from both sides and combine the x terms
0.2x = 10
Divide both sides by 0.2
x = 50
Now we know we need 50 quarts of the 60% solution. And we need (100 - 50) = 50 quarts of the 40% solution as well.</span>