Ron filings are placed on a scale. as the filings rust, the scale measures an increasing mass. how does the law of conservation of mass apply to these results? a. the law does not apply because a physical change occurred. b. the law applies because the volume of the iron was conserved. c. the law applies, but all reactants and products must be accounted for. d. the law does not apply because a chemical change occurred.

C. The law applies, but all reactants and products must be accounted for.

Explanation:

The law of conservation of the matter is a law in physics that states that whem a reaction takes place you can not create more matter than the matter that already exists, so in this case the mass is increasing because it is recting with the oxygen in the environment so that´s why the mass is increasing, in this case the law applies but you have to take into account all the reactants which should include the oxygen in the environment.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

16

explanation:

the marks go by 4s