Methane (ch4) is the main component of natural gas. it is burned for fuel in a combustion reaction. the unbalanced combustion reaction for methane is shown below. ch4 + o2 co2 + h2o + heat when the reaction is balanced, how many carbon dioxide molecules are produced for every methane molecule burned?

1 molecule of carbon dioxide is produced for every methane molecule.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction for combustion of methane is:

Thus for every 1 molecule of methane used 1 molecule of carbon dioxide is produced.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

can you attach the