Which formula represents a hydrocarbon?

CaO2

C5H12

CH2O

H2SO4

Does it matter what initial concentration of reactants and products are used

An element that can have different physical properties or chemical arrangement is called a (n) a radio active element C. halogen b. transmutation d. allotrope

How many d electrons are found in cobalt

Cl is highly reactive. We know NaCl to A: have similar properties to Cl B: be highly reactive C:have completely different properties D: take on some of the properties of Cl

Which refers to the amount of a solute that will dissolve in a given volume of solvent at a given temperature and pressure? solubility supersaturated dissolution rate concentrated

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.

Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecules such as those found in living organisms? A. Carbon forms large compounds that are not chemically reactive. B.

Name a type of asteroid and give a description.