Suppose you are performing an experiment which uses silver-113, a radioactive isotope of silver with a half-life of 5.36 hours. It takes 7.6 hours to get the silver-113 from the warehouse and set it up in your laboratory. How many grams should you order if you need 20 grams at the start of the experiment

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)]

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

How many moles of bromine are needed to produce 3.23 moles of potassium bromide