A chemist needs 40.0 g of concentrated sulfuric acid for an experiment. the density of concentrated sulfuric acid at room temper
ature is 1.84 g/ml. what volume of the acid is required?
1 answer:
You might be interested in
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
Which has the highest electronegativity value?
A
hydrogen
B
calcium
C
helium
D
fluorine d because fluorine has a higher group number
A
hydrogen
B
calcium
C
helium
D
fluorine d because fluorine has a higher group number