Filtration of wastewater flowing over a surface of land with vegetation and water is a an artificial wetland
a stabilization pond
a biodegradable treatment
an open aeration pond

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Ineed to find the answer of this question because i dont understand it

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90