What is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?

Answer : The density of the object will be,

Explanation :

Density : It is defined as the mass contained per unit volume.

Formula used for density :

Given :

Mass of an object = 5.0 grams

Volume =

Now put all the given values in the above formula, we get the density of an object.

Therefore, the density of the object will be,

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 :