1.ΔHfusion\Delta H_{fusion}ΔHfusion of a substance is 'xxx' and ΔHvap\Delta H_{vap}ΔHvap is 'yyy', then ΔHsublimation\Delta H_{sublimation}ΔHsublimation will bea.x+yx + yx+yb.x−yx - yx−yc.x/yx/yx/yd.y/xy/xy/xLogin to continueOnly logged in users canattempt or see the solution.