A solid object with the density of 2.8 g/mL is placed in water. What will most likely happen? (a) It will dissolve.
(b) It will float.
(c) It will sink.
(d) It will melt.
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Calculate the number of molecules present in 0.750 mol of mgo.

Element before carbon on the periodic table

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.