Brainliestttme : )

a student wrote a chemical equation as shown.

2h2s + 3o2 → h2o + so2

what should the student do to balance the equation?

add a coefficient 4 before h2o and a 2 before so2.
add a coefficient 2 before h2o and a 4 before so2.
add a coefficient 5 before h2o and a 4 before so2.
add a coefficient 2 before h2o and a 2 before so2.

2H2S + 3O2 → H2O + SO2

We have 4 H on the left and 2 on the right

2 S on the left and 1 on the right

6 O on the left and 3 on the right

We need to multiply everything on the right  by 2

Add a coefficient 2 before H2O and a 2 before SO2.

2H2S + 3O2 → 2H2O + 2SO2

4H  4H

2S = 2S

6O =2O

Balances

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.