Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.00×10−2 . The diluted solution is then placed in a spray bottle for application on the desired surfaces.
How many moles of luminol are present in 2.00 L of the diluted spray?
Do you have units for the concentration?
8.00 x 10^-2
To find the number of moles of luminol present in 2.00 L of the diluted spray, we need to use the concentration of the solution and the volume.
First, we need to determine the number of moles of luminol present in 1 liter (1 L) of the diluted solution. We can use the given concentration of 4.00×10^-2 M (moles per liter) to calculate this.
To convert the concentration from moles per liter (M) to moles per 1 L, we can multiply the concentration by the volume:
Number of moles in 1 L = concentration × volume = (4.00×10^-2 mol/L) × (1 L) = 4.00×10^-2 mol
Now, we can calculate the number of moles present in 2.00 L of the diluted spray by multiplying the number of moles in 1 L by the volume:
Number of moles in 2.00 L = (4.00×10^-2 mol/L) × (2.00 L) = 8.00×10^-2 mol
Therefore, there are 8.00×10^-2 moles of luminol present in 2.00 L of the diluted spray.