How many liters of H2O gas are produced when 7.25 liters of C3H8 are
burned at STP?

C3H8 + 5O2 → 3CO2 + 4H2O

(pls show work)

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?