This stadium can hold 100,000 or 1x10*5 people. The number of atoms in a grain of iron is about 1x10*18. Would you need 1x10*10 or 1x10*13 stadiums to hold the same number of people as the number of atoms in a grain of iron? Explain your answer.

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.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

I’m an electrically neutral atomic any element, there are equal numbers of