Answer:
6 moles
Explanation:
First find the balanced equation for the rxn
N2 + 3 H2 ===> 2 NH3
each mole of N2 requires 3 moles of Hydrogen
so 6 moles of H needed
The windmill possesses potential energy because it is suspended off of the ground.
The concentration of hydroxide ion of a solution with a pH of 8. 25 is 1.77×
M
Calculation,
The pH of a solution tells us about concentration of the
ion ( proton ) in solution. However, if we know the value of pH , we can calculate pOH with the help of pH and from pOH we can find concentration of hydroxide ions in the solution.
pH + pOH = 14
8. 25 + pOH = 14
pOH = 14 - 8. 25 = 5.75
Since, pH = -㏒[
]
Similarly, pOH = -㏒[
]
If pOH = 5.75 , that means that -㏒[
] = 5.75 ,which means that,
[
] =
= 1.77×
.
So, we know that the concentration of the
ions in the solution with pH of 8.25 is 1.77×
Molar
to learn more about hydroxide ion
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Answer:
Group of answer choices Using radioactive dating to determine the age of different rocks found in the desert.
Explanation:
Answer:
Explanation:
Total weight of compound = 63.94 + 61.06 = 125 g
125 g of compound contains 63.94 g of cesium
38.77 g of compound contains 63.94 x 38.77/125 g = 19.83 g of cesium
rest will be iodine so
iodine = 38.77 - 19.83 = 18.94 g.