The density of platinum is 23.4 g/cm3

. calculate the mass of 75.0 cm3

of platinum.

Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.