Calculate the mass of water produced when 9.47 g of methane, CH4, reacts with an excess oxygen in the following unbalanced reaction. CH4 + O2 → CO2 + H2O

this is the balanced equation:
CH4 + 3O2 → CO2 + 2H2O

a. 1.18 g H20
b. 21 g H20
c. 11 g H20
d. 0.53 g H2O​

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these