Faunal succession and fossil correlation relate to the principle of superposition because there are fossils of certain organisms in a rock layer. By knowing the order in which the organisms came and that fossils of the same age mean the rock layers are the same age, scientists can determine the age of the rock layers with the youngest layers on top. True or False

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When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?