The way that light waves interact with different mediums is called the .

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Amixture with the same composition throughout is!