21. How many moles are in 1.25 g of CH4? Information that MIGHT be useful: At room temperature, the density of CH4 is 0.654 g/L. a. 0.0779 mol
b. 0.818 moi
c. 1.91 moi
d. 12.8 mol
e. 20.1 mol

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