How many g are equal to 45.7 mg?

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.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy