We know that v = d/t. Rearrange the formula to solve for distance and then answer this question: A car travels at 30 miles/hour for 3.5 hours, how far does it travel?

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.

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.

Condensation happens when water vapor cools. true or false? ?