We can use Pythagoras theorem for it. Pythagoras theorem is The square of the hypotenuse (longest side) equals to the square of the other sides added together. b^2 + x^2 = a^2 So we just substitute the numbers given into the equation. 12^2 + x^2 = 13^2 144 + x^2 = 169 X^2 = 25 X = 5 Therfore the answer is 5 cm
You would get four moles of magnesium nitrate :) you would have to “ ?molesmg(oh)2 = 8molmg(no3)2 x molmg(oh)2 / 2molhno3 = 4 moles of magnesium nitrate :))) hopefully this helps! <3
