Calculate the energy to heat the cube of silver, with a volume of 20.0 cm3 , from 15 âc to 32 âc. (assume that density of silver is 10.5 g/cm3, specific heat for silver is 0.235 j/gâc.)

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.