Tom’s hand print is 30 cm2 but Sean’s handprint is only 20 cm2. If Tom is able to push with a force of 70 N and Sean can push with a force of 50 N, who can exert a larger pressure on an object?

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

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)]

37.0 °c = °f (human body normal temperature)