Answer:
Splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. ( B-)
Chemical Formula for Nickel (iii) Bronide is NiBr3
Answer:
The answer to your question is below
Explanation:
Data
Volume = 1000 ml
Concentration = 2M
molecule = NaCl
Process
1.- Calculate the number of moles of NaCl
Molarity = moles/Volume
-Solve for volume
moles = Molarity x Volume (liters)
-Substitution
moles = 2 x 1
-Result
moles = 2
2.- Determine the molar mass of NaCl
NaCl = 23 + 35.5 = 58.5 g
3.- Calculate the mass of NaCl to prepare the solution
58.5 g ----------------- 1mol
x ----------------- 2 moles
x = (2 x 58.5) / 1
x = 117g
4.- Weight 117 g of NaCl, place them in a volumetric flask (1 l), and add enough water to prepare the solution.
2 and 3
The vapor pressure has to do with the heat and the evaporation
The 
for the process is 7265.2 Joules/mol.
<h3>Calculation of
:</h3>
Instead of providing us with the rate constants at two distinct temperatures, the information in the issue provides us with the time needed at two different temperatures.
For a specific process, the ratio of rate constants will match the ratio of rates.
A ratio of rates will have an inverse relationship with a ratio of times since rates are inversely related to time (greater time equals smaller rate). Below is a summary of this.
Using Arrhenius equation:
ln![\frac{k_{1} }{k_{2} } =\frac{-Ea [1/T_{2} -1/T_{1}] }{R}](https://tex.z-dn.net/?f=%5Cfrac%7Bk_%7B1%7D%20%7D%7Bk_%7B2%7D%20%7D%20%3D%5Cfrac%7B-Ea%20%5B1%2FT_%7B2%7D%20-1%2FT_%7B1%7D%5D%20%7D%7BR%7D)
= 273 +100
= 373 K
= 273 + 90
= 363 K
Gas constant R = 8.314 Joules/Kelvin.mol
ln4.8/4.5 = -Ea/8.314 [1/373 - 1/363]
0.064539 x 8.314 = Ea x 0.000073856
= 7265.2 Joules/mol
Hence, The for the process is 7265.2 Joules/mol.
Learn more about rate constant here:
brainly.com/question/14977272
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