The heat of vaporization for dichlorodifluoromethane is 166 joules per gram (J/g) at he boring
point of -30°C. How much heat would be absorbed when 15 grams of liquid dichlorodifluoromethane
vaporizes at its boiling point?

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n

Astream of surface water reaches a porous portion of sediment and seeps into the ground. this water eventually joins a large reservoir of water located beneath the earth's surface. the example above describes the interacting with the a. cryosphere; biosphere b. hydrosphere; biosphere c. hydrosphere; geosphere d. cryosphere; geosphere

How many grams of oxygen gas will react completely with a block of calcium metal that is 3.0 cm by 3.5 cm by 4.2 cm, if the density of calcium is 1.55 g/ml? show all steps of your calculation as well as the final answer.