Sulfur powder (S) and oxygen gas (O2) undergo a chemical reaction to form sulfur dioxide (SO2).
Which equation represents this chemical reaction?

S (s) + O₂ (g) → SO₂ (aq) represents this chemical reaction

In stating a chemical equation it can be done in the form of a word or a chemical formula

A word equation will include the words of the reactants, products, form of the compound (liquid, gas, solid), the total concentration/quantity of the reactants and products which can be expressed in mass, moles, or volume

The questions statement above shows that sulfur powder (S) and oxygen gas (O₂) are reactants (located on the left of the reaction equation), and sulfur dioxide (SO₂) is the product of the reaction (stated in the problem there is the word "to form") which is located on the right

So the complete reaction

S (s) + O₂ (g) → SO₂ (aq)

i do not get it   at all

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?