When `4` moles of gypsum is heated at `393K` ,the number moles of water vapour released is:

When gypsum is heated to 393 K, it forms :

What happens when gypsum is heated to 390 K ?

Gypsum on heating at 393K produces

Gypsum on heating to 390 K gives

Four moles of hydrogen , two moles of helium and one mole of water vapour form an ideal gas mixture. What is the molar specific heat at constant pressure of mixture?