WHAT IS THE UNKNOWN METAL? A 110 g block of metal was heated to 100°C. When transfered to 100 g of water, the water increased temperature from 20.1°C to 35.4°C
If water has a specific heat capacity of 4.18 Jg, determine the unknown metal by calculating it's specific heat. The unknown metal is ___

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

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.