Urgent Essay Help-What parts of Dalton’s atomic theory no longer agree with the current picture of the current picture of the atom?
Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm3. Show all calculations leading to an answer.
Explain why a model of the atom is crucial to understanding chemistry and in explaining the behavior of matter.
If an element has 12 protons and 17 neutrons, how many electrons must it have?
