Answer:
1.12M
Explanation:
Given parameters:
Volume of solution = 2.5L
Mass of Calcium phosphate = 600g
Unknown:
Concentration = ?
Solution:
Concentration is the number of moles of solute in a particular solution.
Now, we find the number of moles of the calcium phosphate from the given mass;
Formula of calcium phosphate = Ca₃PO₄
molar mass = 3(40) + 31 + 4(16) = 215g/mol
Number of moles of Ca₃PO₄ = 
= 2.79moles
Now;
Concentration = 
Concentration = 
= 1.12M
Answer:
In a chemical equilibrium, the forward and reverse reactions occur at equal rates, and the concentrations of products and reactants remain constant. A catalyst speeds up the rate of a chemical reaction, but has no effect upon the equilibrium position for that reaction.
Explanation:
Answer:
The Persian Gulf and the Tigris and Euphrates
Explanation:
Answer:
t = 71.3 s
Explanation:
Hello there!
In this case, since the second-order integrated law is given by the following equation:
![\frac{1}{[H_2O_2]} =\frac{1}{[H_2O_2]_0}+kt](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B%5BH_2O_2%5D%7D%20%3D%5Cfrac%7B1%7D%7B%5BH_2O_2%5D_0%7D%2Bkt)
Thus, given the initial and final concentration of hydrogen peroxide and the rate constant, we obtain the following time:
![\frac{1}{[0.0170M]}-\frac{1}{0.0800M}=0.650M^{-1}s^{-1}t\\\\t=\frac{46.32M^{-1}}{0.650M^{-1}s^{-1}} \\\\t=71.3s](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B%5B0.0170M%5D%7D-%5Cfrac%7B1%7D%7B0.0800M%7D%3D0.650M%5E%7B-1%7Ds%5E%7B-1%7Dt%5C%5C%5C%5Ct%3D%5Cfrac%7B46.32M%5E%7B-1%7D%7D%7B0.650M%5E%7B-1%7Ds%5E%7B-1%7D%7D%20%5C%5C%5C%5Ct%3D71.3s)
Best regards!
The answer is C) <span>Helium forms the solar core, which continually increases in size.
When the hydrogen is </span><span>produced by the conversion and made into Helium the core contains the helium as well as producing it. Which in turn continually increases the size of the solar core.</span>
