QUESTION 4 2 points
How many moles of atoms are in a 408.67 grams sample of iron? (Do not include units) Report your answer to 3 significant figures.

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

When balancing a chemical equation:

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.