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​

Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2al(s)+3cl2(g)→2alcl3(s) what is the maximum mass of aluminum chloride that can be formed when reacting 32.0 g of aluminum with 37.0 g of chlorine? express your answer to three significant figures and include the appropriate units.

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.