Dilute an acid

A strong acid of $0.03\ \text{M}$ is diluted ten times, again and again. You will make the program list the concentrations, find the pH of each, and count how many dilutions it takes to push the pH above $5$.

The idea. Each tenfold dilution divides the hydrogen ions by ten, so the pH goes up by one: $\text{pH} = -\log_{10}[\text{H}^+]$.

Your tasks.

1. Fill concs with the starting concentration and the five that follow, each a tenth of the one before.
2. Fill phs with the pH of each concentration.
3. Find steps, the number of dilutions after which the pH first goes above $5$.