Gabe follows the directions to make chocolate chip cookies for his favorite Chemistry teacher. The recipe says it will make 24 c
1 answer:
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Answer:
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to set up the following chemical equation at equilibrium:
Now, we can set up the equilibrium expression in terms of x (reaction extent) whereas the initial concentration of both iodine and bromine is 0.5mol/0.250L=2.0M:
Thus, we solve for x as show below:
Therefore, the concentrations of both bromine and iodine are:
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Answer:
99.3%
Explanation:
The percent by mass of the solute can be expressed as:
- % mass =
* 100%
And for this problem:
- Mass of Solute = Mass of sodium lithium chloride = 29 g
- Mass of Solvent = Mass of Water
So to calculate the percent by mass first we need to <u>calculate the mass of water</u>, to do so we use its<em> density</em> (1 g/L):
- 202 mL is equal to (202/1000) 0.202 L.
Density water = mass water / volume
- 1 g/L = mass water / 0.202 L
- Mass water = 0.202 g
Now we have all the data required to <u>calculate the % mass:</u>
- % mass =
* 100 % = 99.3%