Amedicine has 421 mg of active ingredient per tablet. how many grams is this? a. 421000gb. 42.1 gc. 4.21 gd. 0.421 g

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.

Which compound contain an iron with a 3+ charge

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro