About 6.5x10^22 molecules.
(5g C2H5OH)x(1 mol C2H5OH/46g C2H5OH)x(6.02x10^23 molecules C2H5OH/1 mol C2H5OH)=(3.01E24)/46=6.5x10^22.
Let me know if this helped!
Answer:
[OH⁻] = 8x10⁻¹⁰
Explanation:
Kw = 1x10⁻¹⁴
Kw = [H₃O⁺] . [OH⁻]
1x10⁻¹⁴ = 1.25x10⁻⁵ . [OH⁻]
1x10⁻¹⁴ / 1.25x10⁻⁵ = [OH⁻]
[OH⁻] = 8x10⁻¹⁰
Answer:
Explanation:
Adjusting entries:
S.no. Accounts title and explanation Debit $ Credit $
a. Accounts receivable 5800
Allowance for doubtful accounts 5800
(for reversing the write off)
b. Cash account 5800
Accounts receivable 5800
(for cash collection from write off account)
Joseph will not get the correct results for his samples. The spectophotometer will measure wrong absorbance values for the sample. It is highly advised to callibrate the instrument by first setting the absorbance of the solvent to zero. After it is done, only then one must determine the absorbance of the test solutions.
