What is the density of sand if the volume is 40.0 ml and the mass is 62.3 g?

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

What shape would a molecule with two bound groups and two lone pairs have?