a student finds that a mass of a unknown object is 28.9 grams and the volume is 12.3 cm which object did the student measure

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Express the following number in scientific notation. 0.026890 =

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax