You have 125 g of a certain seasoning and are told that it contains 58.0 g of salt. what is the percentage of salt by mass in this seasoning?

46.4

Explanation:

Formula

weight % = weight of solute / total weight

weight % = 58 g / 125 g x 100

weight % = 0.464 x 100

weight % = 46.4

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 :

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