I'm really struggling pls help if the net electrical charge on the left side of a balanced total ionic equation is 2+, what must be the net electrical charge on the right side of the equation?
a) 2+
b) 2-
c) 4+
d) 0

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.

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.