Anybody, me! i'm a sophomore in high school and chemistry is killing ! i don't wanna fail, but i know that i can't do it alone, i need your !

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide

Do polar molecules have ionic bonds?