Answer: 2.749 x 10^-14
Explanation:
<u>Given:</u>
The concentration of Ce(IO3)4 in the solution = 1.5 x 10-2 g/100 mL= 0.15 g/1000 mL= 0.15 g/L
Molar mass of Ce(IO3)4 = 839.7267 g/mol
Therefore, the molarity of Ce(IO3)4 in the solution is given by:
![$$\begin{gathered}M=\frac{0.15 \mathrm{~g} / L}{839.7267 \mathrm{~g} / \mathrm{mol}} \\M=1.7863 \times 10^{-\mathbf{4}} \mathrm{mol} / {L}=\mathbf{1 . 7 8 6 3 \times 1 0 ^ { - \mathbf { 4 } } \boldsymbol { M }}\end{gathered}$$](https://tex.z-dn.net/?f=%24%24%5Cbegin%7Bgathered%7DM%3D%5Cfrac%7B0.15%20%5Cmathrm%7B~g%7D%20%2F%20L%7D%7B839.7267%20%5Cmathrm%7B~g%7D%20%2F%20%5Cmathrm%7Bmol%7D%7D%20%5C%5CM%3D1.7863%20%5Ctimes%2010%5E%7B-%5Cmathbf%7B4%7D%7D%20%5Cmathrm%7Bmol%7D%20%2F%20%7BL%7D%3D%5Cmathbf%7B1%20.%207%208%206%203%20%5Ctimes%201%200%20%5E%20%7B%20-%20%5Cmathbf%20%7B%204%20%7D%20%7D%20%5Cboldsymbol%20%7B%20M%20%7D%7D%5Cend%7Bgathered%7D%24%24)
The solubility equilibrium is given by:
![$$\mathrm{Ce}\left(\mathrm{IO}_{3}\right)_{4(s)} \rightleftharpoons \mathrm{Ce}_{(a q)}^{3+}+3 \mathrm{IO}_{3}^{-}(a q)$$](https://tex.z-dn.net/?f=%24%24%5Cmathrm%7BCe%7D%5Cleft%28%5Cmathrm%7BIO%7D_%7B3%7D%5Cright%29_%7B4%28s%29%7D%20%5Crightleftharpoons%20%5Cmathrm%7BCe%7D_%7B%28a%20q%29%7D%5E%7B3%2B%7D%2B3%20%5Cmathrm%7BIO%7D_%7B3%7D%5E%7B-%7D%28a%20q%29%24%24)
Therefore, the solubility product is given by:
![\begin{gathered}K_{s p}=\left[C e^{3+}\right] \cdot\left[I O_{3}^{-}\right]^{3} \\\therefore K_{s p}=\left(1.7863 \times 10^{-4}\right) \times\left(3 \times 1.7863 \times 10^{-4}\right)^{3}\end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7DK_%7Bs%20p%7D%3D%5Cleft%5BC%20e%5E%7B3%2B%7D%5Cright%5D%20%5Ccdot%5Cleft%5BI%20O_%7B3%7D%5E%7B-%7D%5Cright%5D%5E%7B3%7D%20%5C%5C%5Ctherefore%20K_%7Bs%20p%7D%3D%5Cleft%281.7863%20%5Ctimes%2010%5E%7B-4%7D%5Cright%29%20%5Ctimes%5Cleft%283%20%5Ctimes%201.7863%20%5Ctimes%2010%5E%7B-4%7D%5Cright%29%5E%7B3%7D%5Cend%7Bgathered%7D)
![\therefore {K_{s p}=2.749 \times 10^{-14}](https://tex.z-dn.net/?f=%5Ctherefore%20%7BK_%7Bs%20p%7D%3D2.749%20%5Ctimes%2010%5E%7B-14%7D)
. Tungsten is commonly used in heavy metal alloys such as high speed steel, from which cutting tools are manufactured. It is also used in the so-called 'superalloys' to form wear-resistant coatings.
Hope this helps please make my answer brainliest
Answer:
400.197mmHg
Explanation:
P1V1 / T1 = P2V2 / T2
Where P1=524 mm Hg V1 =275 ml T1 = 35°C +273 = 308k
V2= 325-ml T2= 5°C+273 = 278k , P2= ?
Substituting the values into the formula.
524 mm Hg ×275 ml /308k = P2×325-ml/278k
Cross multiply
524 mm Hg ×275 ml×278k=308k×P2×325-ml
40059800= 100100×P2
P2 = 40059800/100100
P2= 400.197mmHg
Hence, the second pressure will be 400.197mmHg
The ice cream melts because it is gaining heat and energy from an endothermic reaction but the mass of the ice cream never leaves the cone. This is because the Law of Conservation of Mass says that matter is not created nor destroyed. Where can the mass go exactly?
Nowhere because it stays in the cone and is the same amount of ice cream as before.