how much sodium chloride would you need to add to 127 mL of water to make a solution that melts at -5.43 C

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.