How many grams of lithium sulfide (Li2S) are in 275 g of a 16 % aqueous solution of Li2S?

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.

When the mercury level in a barometer decreases that atmospheric pressure has

What are alloys? give two examples of it. identify the composition of solute and solvent in it. (can someone me fast its urgent! )