A student measures the mass of a rock to be 20.687 grams. Next, the student fills a graduated cylinder with 15.0 mL of water. When the student adds the rock to the graduated cylinder, the water level rises
to 17.2 mL. What is the density of the rock rounded to three significant figures?

Aaspirin has a density of 1.40 g/cm^3 what is the volume in cubic centimeters of a tablet weighing 320 mg?

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

How to convert a density of 0.791g/cm3 to lb/ft3