What is the name and mass of the substance produced by the decay of Ytterbium-175?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

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.