(6.022*10^23)*2.58= what’s the answer

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

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.

How many grams of mgbr2 are needed to produce 75g or metal?