Write equations to represent positive and negative ion formation for the following pairs of elements. Then write a formula
for the ionic compound that results when the ions combine.
a. Ca and S
b. Mg and N
c. elements number 19 and 17

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n

Salt in oceans comes from and of rocks

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices