Ahome water softener has 75 000 cm3 of ion exchange resin with a capacity of 39 kg/m2 the occupants use 1800 l/day of water containing 0.24 mg/cm of hardness as caco3. if they want to soften the water to 78 mg/l as caco3, what percentage of water should bypass the unit? when will the unit need to be regenerated? (

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17