Help with simple for loop

In R, we'd refer to kJ/mol in your table as a column or variable.
Without a for loop, you can quickly get the mean of a column with


$ is a shorthand for extracting named elements of a list. More details at$%20#subsetting-1

With the tidyverse, you might approach a problem like this with

data %>%
    mean = mean(`kJ/mol`)

Since this is an course assignment, I'm not going to directly answer your question, but I will point out that for loops in R work similarly, but differently to the code you set up. Here's some details on how to get started.

Also, it's helpful and tidy to format your code into code chunks when interacting with folks on forums like this.. Details on how to do that here: FAQ: How to format your code

People also like to see coding questions like this in the form of reproducible examples (reprex for short). Details on how to create those here, FAQ: What's a reproducible example (`reprex`) and how do I do one?