Hydrosulfuric acid (h2s) undergoes combustion to yield sulfur dioxide and water by the following reaction equation: 2 h2s + 3 o2 → 2 so2 + 2 h2o

The question is incomplete, here is the complete question:

Hydrosulfuric acid undergoes combustion to yield sulfur dioxide and water by the following reaction equation:

What is the of the reaction if 26.2 g of reacts with excess to yield 431.8 kJ?

The of the reaction is -1120.10 kJ

Explanation:

To calculate the number of moles, we use the equation:

Given mass of hydrogen sulfide = 26.2 g

Molar mass of hydrogen sulfide = 34 g/mol

Putting values in above equation, we get:

We are given:

Amount of heat released = 431.8 kJ

By Stoichiometry of the reaction:

When 0.771 moles of hydrogen sulfide is reacted, the amount of heat released is 431.8 kJ

So, when 2 moles of hydrogen sulfide will react, the amount of heat released will be =

Sign convention of heat:

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

Hence, the of the reaction is -1120.10 kJ

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.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.