Which of the following could cause a physical change in a solid piece of sodium metal? A exposing it to chlorine gas B. hitting it with a hammer
C. putting it in water
D. dissolving in acid

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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)]

What is the molecular weight of copper