The answer is A. during good behavior
Answer:
The answer to your question is empirical formula = CH
molecular formula = C₆H₆
Explanation:
Data
Carbon 92.2%
Hydrogen 7.76%
Formula mass = 78.1 g
Process
1.- Express the percents as grams
Carbon 92.2 g
Hydrogen 7.76 g
2.- Convert the grams to moles
Carbon 12 g ---------------- 1 mol
92.2 g ------------- x
x = (92.2 x 1)/12
x = 7.68 moles
Hydrogen 1 g ------------------ 1 mol
7.76 g ------------- x
x = 7.76 moles
3.- Divide by the lowest number of moles
Carbon 7.68 / 7.68 = 1
Hydrogen 7.76 / 7.68 = 1.01
4.- Write the empirical formula
CH
5.- Calculate the molecular weight of the empirical formula
CH = 12 + 1 = 13
6.- Divide the molecular weight by the molecular weight of the empirical formula
78.1 / 13 = 6
7.- Write the molecular formula
6(CH) = C₆H₆
Lydia and Damien will select bases that have a small Kb and which are found in the storage cabinet in solutions with high concentrations.
Explanation:
Before choosing a bottle Lydia and Damien should consult a Kb (base dissociation constant) table of bases. The lower the Kb the weaker the base.
Because they were asked by the profesor to select bottles of concentrated bases they will choose the solution that have the highest concentration. Weak bases that are commonly found in laboratories are triethylamine and pyridine.
Learn more:
about weak bases
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