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​

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

If two objects at different te,peraure are in contact with each other what happens to their temperature