An expandable container is filled with 45 in.3 of air and is sitting in ice water that is 32°F. At what volume in in.3 will the gas expand to if it is heated to 52°F after it was removed from the icy water? [answer should exclude the unit: ##]

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.