5. A 17.9 g sample of unknown metal was heated to 48.31 °c. It was then added to 28.05 g of water in an
insulted cup. The water temperature rose from 21.04
°C to 23.98°c. What is the specific heat of the metal
in Jigºc?

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 :

b. examine and describe cells

what are the statements

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter