A teacher performing a demonstration finds that a piece of cork displaces 24 mL of water. The piece of cork has a mass of 6 g. What is the density of the cork?

  0.25 g/cm³

Explanation:

Density is the ratio of mass to volume:

  (6 g)/(24 mL) = 0.25 g/mL = 0.25 g/cm³

1 mL = 1 cm³. Units of density in the cgs unit system are g/cm³.

individual oxygen atoms are formed during photosynthesis.-c.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.