The following results are the obtained in an experiment to determine the formula of an oxide of Silicon? Mass of crucible = 15.20g Mass of crucible + silicon=15.48g Mass of cruicible + oxide of silicon = 15.80g Find the empirical formula of oxide of Silicon.

What is the empirical formula for c4h8o2

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.

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %