A alloy consist of 70% aluminum and 30% magnesium by mass. What will be it's density, of the relative density of aluminum I'd 2700kg/m3 and the relative density of magnesium is 1740kg/m3
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201cm/s÷5: 18

explanation:

there is no explanation

i'm assuming that the correct answer is indeed the first one/ "a"..

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 :