hii um i'm in middle school and i'm doing the body in science. alot of boys point at me since i am a thicker one (not fat though
lol just kind of curvy). how can i just ignore them w/o feeling embarrassed? :(
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The given question is incomplete. The complete question is:
The combustion of propane (C3H8) in the presence of excess oxygen yields and
When only 2.5 mol of are consumed in order to complete the reaction, ________ mol of
are produced.
Answer: Thus when 2.5 mol of are consumed in their reaction, 1.5 mol of
are produced
Explanation:
The balanced chemical equation is:
According to stoichiometry :
5 moles of produce = 3 moles of
Thus 2.5 moles of will produce =
moles of
Thus when 2.5 mol of are consumed in their reaction, 1.5 mol of
are produced
Explanation:
a) Using Beer-Lambert's law :
Formula used :
where,
A = absorbance of solution = 0.945
c = concentration of solution = ?
l = length of the cell = 1.20 cm
= molar absorptivity of this solution =
()
14.16 μM is the molarity of the red dye solution at the optimal wavelength 519nm and absorbance value 0.945.
b)
1 L of solution contains moles of red dye.
Mass of moles of red dye:
c) In order to dilute red dye solution by 5 times, we will need to add 1 L of water to solution of given concentration.
Concentration of red dye solution =
Concentration of red solution after dilution = c'
The final concentration of the diluted solution is