Two waves were analyzed with some high-tech instrumentation. The first wave was found to have a wavelength of 3 x 10 m and the s
1 answer:
Explanation:
The first wave was found to have a wavelength of 3 x 10⁵ m and the second wave had a wavelength of 3 x 10⁴ m
We need to find which wave have a higher frequency.
The relation between frequency and wavelength is given by :
Let f₁ and f₂ be the frequency of wave 1 and wave 2.
And
Hence, the wave having less wavelength will have higher frequency. The wave having wavelength 3 x 10⁴ m will have higher frequency.
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Any substance that increases the concentration of in aqueous solutions is Arrhenius's acid.
Arrhenius define acids as substances with the chemical capacities to increase the concentration of hydrogen ion in aqueous solutions.
Thus, substances like HCl, HNO3, HBr, etc. would be considered an acid. This is because they ionize in aqueous solutions as follows:
HCl ---> +
More on Arrhenius acids can be found here: brainly.com/question/9936252
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Answer:
(1) The absorbance of the aspirin in solutions will increase.
(2) [ASA]f = 3.79x10⁻⁴M
(3) [ASA]i = 3.79x10⁻³M
(4) m ASA = 0.171g
Explanation:
<u>The Beer's Law is expressed by:</u>
(1)
<em>where A: is the absorbance of the species, ε: is the molar attenuation coefficient, l: is the pathlength and C: is the concentration of the species</em>
(1) <u>From </u><u>equation (1)</u><u>, the relation between the absorbance of the species and its concentration is directly proportional,</u> so if the aspirin concentration in solutions increases, the absorbance of the solutions will also increase.
(2) Starting in the given expression for the relationship between absorbance and concentration of ASA, we can calculate its concentration in the solution:
Therefore, the aspirin concentration in the solution is 3.79x10⁻⁴ M
(3) To calculate the stock solution concentration, we can use the next equation:
<em>where Vi: is the stock solution volume=10mL, Vf: is the solution diluted volume=100mL, [ASA]i: is the aspirin concentration of the stock solution and [ASA]f: is the aspirin concentration of the diluted solution</em>
Hence, the concentration of the stock solution is 3.79x10⁻³M
(4) To determine the aspirin mass in the tablet, we need to use the following equation:
<em>where η: is the aspirin moles = [ASA]i V₀, M: is the molar mass of aspirin=180.158g/mol, V₀: is the volume of the volumetric flask=250mL and [ASA]i: is the aspirin concentration in the volumetric flask which is equal to the stock solution=3.79x10⁻³M</em>
Then, the aspirin mass in the tablet is 0.171 g.
I hope it helps you!