An object is placed in a graduated cylinder and displaces 10 ml of water. the density of the object is 2 g/ml. what is the mass of the object?

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)