Amothball, composed of naphthalene (c10h8), has a mass of 1.72 g .how many naphthalene molecules does it contain?

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles.

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

1 mole of napthalene contains = molecules

Thus 0.0134 moles of napthalene contain= molecules

Thus there are napthalene molecules.

i don,t know so just answer mine

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.