In the lab, a student fills a dry 50 ml graduated cylinder with 15 ml of water. the mass of the water in the graduated cylinder was 15.125 grams at 25°c. what is the true volume of the water measured in the graduated cylinder? the density of water at 25°c is 0.99707 g/ml

Explanation:

Hi, you know  for sure that there are 15.125 gr of water in hte cylinder. Also you know that at 25°c the density of water is 0.99707 g/ml

So the true volume is:

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 :

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)