A scientist is comparing samples of intrusive and extrusive igneous rock. Describe one way the samples are alike and one way they are different

How many atoms of oxygen are contained in 160 grams of n2o3

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.