The density of air at 20°C and 1.00 atm is 1.205g / L . If this air were compressed at the same temperature to equal the pressure at 40.0 m below sea level, what would be its density? Assume the barometric pressure is constant at 1.00 atm. The density of seawater: is 1.025 g/cm^ 3​

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]