Consider that you prepared a solution by dissolving 1.19 mL of an unknown organic substance (d = 0.953 g/mL) into 29.9 mL of cyclohexane (d = 0.774 g/mL). What is the mass percent of the unknown in the solution? Enter your answer in units of mass percent to three significant figures.

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

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.

since electrons are negative the answer is neagtaive