Aluminum metal reacts with nitric acid to produce aluminum nitrate and hydrogen gas. identify the balanced reaction that describes this process.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?