A sample of soft saturated clay has a volume of 100 cu.m. and weighs 175 grams. After oven-drying, it has a mass of 120 grams. a. What is the volume of voids in m3? b. What is the volume of water in m°? c. What is the void ratio of the sample? d. What is the specific gravity of the soil?

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Alloys

An alloy is an admixture of two or more metals or a metal and a non-metal. Since ancient times, man has been using alloys. Alloying helps to retain the properties of the parent matter, such as hardness, strength, toughness, ductility and is corrosion-resistant. Copper alloys such as brass have antimicrobial properties that help to fight against (Coronavirus disease 2019) COVID-19 and other hospital-acquired infections. Some common alloys are brass, bronze, solder steel, etc. Most alloys have a lower melting point than their constituents. This is due to the presence of a nonmetal as one of the constituents that behaves as an impurity and restricts the raise of melting point.