Item 1 What is the density of a cube with a side length of 2 meters and a mass of 40 kg?

•120 kg/m2

•32 kg/m

•60 kgm

• 5 kg/m3

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.