How can I more effectively set up my table to display an x-axis of concentration values (in scientific notation) vs. absorbance values (in nm) on my y-axis without having my data suddenly fall way out of range?

[Excel-Microsoft 365, Version 2604 (Build 19929.20090)] To preface, I am a current student + novice at excel, and I'm trying to avoid using AI to guess what I'm trying to describe here.

I am making a scatter plot of absorbance vs concentration values for a chromatography experiment. My x-axis is my sample's molarity (in scientific notation ranging from 0.00E⁰ to 6.00E^-5) which were a blank solution, 1E^-5, 2E^-5, and 4E^-5. For each of those I measured absorbance in triplicate. So for each molarity (including the blank) there are 3 absorbance values that were recorded.

I have set my table up in so many different styles and I can't get ahold of my professor nor any classmates right now to help me figure out why my scatterplot keeps looking 'wrong'.

Here is a copy paste of the current table format I'm messing with for my graph:

My goal is to show the concentration vs. absorbance and I should see a positive slope with my trendline, instead everything keeps turning out flat or has a negative slope or doesn't appear on my graph/is out of range.

(Will update with images if anyone requests - not sure how I could easily share them in my post if anyone wants to help tell me how)