6. An ice cube tray full of ice (235g) at -7.0°C is allowed to warm up to room temperature (22°C). How much energy must be absorbed by the contents of the tray
in order for this to happen?

i think 4.44 moles

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.