When the dissociation equation of NH3 is:
NH3(aq) + H2O ↔ NH4(aq) + OH-(aq)
when Kb =(1.8 x 10^-5)
and when PH+POH= 14
∴ POH = 14 -11= 3
when POH = -㏒[OH]
∴[OH] = 0.001
when [OH] = [NH4+] = 0.001
when Kb = [NH4+][OH-]/[NH4OH]
by substitution:
1.8 x 10^-5 = (0.001)^2 / [ NH4OH]
∴[NH4OH] = 0.06 M
Answer:
C. the cataracts of the Nile
Explanation:
edge
Hope this helps :)
Answer:
kilogram ;)) The kilogram is the standard
KBr + Fs won't make a reaction because KBr is stable with an octet.
Bi+O2 probably won't occur because the O2 has a stable octet as well/
The main constituent of gallstones is cholesterol. Cholesterol may have a role in heart attacks and blood clot formation. Its elemental percentage composition is 83.87% C, 11.99% H, and 4.14% O. It has a molecular weight of 386.64 amu. Empirical formula is C₃H₄O₁ and Molecular formula is 7(C₃H₄O₁).
<h3>What is Empirical Formula ?</h3>
Empirical formula is the simplest whole number ratio of atoms present in given compound.
Element % Atomic mass Relative no. of atoms Simplest whole ratio
C 83.87 12 = 6.98 = 3
H 11.99 1 = 11.09 = 4
O 4.14 16 = 0.25 = 1
Thus the empirical formula is C₃H₄O₁.
<h3>How to find the Molecular formula of compound ?</h3>
Molecular formula = Empirical formula × n
n =
=
= 7
Molecular formula = Empirical formula × n
= 7 (C₃H₄O₁)
Thus from the above conclusion we can say that The main constituent of gallstones is cholesterol. Cholesterol may have a role in heart attacks and blood clot formation. Its elemental percentage composition is 83.87% C, 11.99% H, and 4.14% O. It has a molecular weight of 386.64 amu. Empirical formula is C₃H₄O₁ and Molecular formula is 7(C₃H₄O₁).
Learn more about the Empirical Formula here: brainly.com/question/1603500
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