Andrea's father made a fruit salad for andrea's lunch. to make the salad, her father mixed pieces of several different fruits together. what kind of change happened when andrea's father made the fruit salad? a. a physical change b. a chemical change c. a temperature change d. a color change

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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)]

Why is the melting of ice a physical change ?