using the formula
C = −3000 ln(x/y)
where y is the intensity of the incident light and x is the intensity of light that emerges. Find the concentration of the substance if the intensity x is 30% of y.

Question

using the formula
C = −3000 ln(x/y)
where y is the intensity of the incident light and x is the intensity of light that emerges. Find the concentration of the substance if the intensity x is 30% of y.

zepdrix · Answer

Find C when `x is 30% of y`.

When $\large x=.30y$

Let's solve for $\large \dfrac{x}{y}$.
Dividing both sides by y gives us,$$\large \color{orangered}{\frac{x}{y}=.30}$$


Substitute this into the equation and solve for C! :)
$$\large C=-3000\ln\left(\color{orangered}{\frac{x}{y}}\right)$$

anonymous · Answer

wow, that's colorful