Which equation below best describes the law of conservation of mass? a. 2fe + 3o2 → 2fe2o3 b. 4fe + o2 → 2fe2o3 c. fe + o2 → fe2o2 d. 4fe + 3o2 → 2fe2o3

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b. slope c. benchmark d. index contour

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Which activity is an innate behavior