How many grams of beryllium carbide can be produced using 50g of methane CH4?

What happens when the temperature of a solution increases?

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.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?