A bell hanging at the top of a tower has 8550 of energy. If it has a mass of 20 kg, find the height of the hell​

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?