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Q. What is Alloys?
Metals have a property of combining with other metals to form alloys. An alloy may be defined as a solid which is formed by a combination of two or more metallic elements, but it itself has metallic properties. Most alloys are solid solutions. For example, brass an alloy of copper and zinc is a solid solution of zinc in copper. In brass some of the copper atoms of face-centred cubic lattice are randomly replaced by zinc atoms. Similarly, bronze an alloy of copper and tin is a solid solution of tin in copper. But not all alloys are solid solutions. Some alloys, such as bismuth-cadmium alloys are heterogeneous mixtures containing tiny crystals of the constituent metals. Others such as MgCu2 are intermetallic compounds which contain metals combined in definite proportions.
Q. Determine the impurities in the sample of oil? After conducting this activity, you will be able to: • determine impurities such as total dirt and organic dirt in the giv
Hard magnetic material is characterized by Hard magnetic material is characterized by two substance:- a) High residual magnetic induction.. b) High coercive force
Introduction This lab will be performed using the Chemistry Collective Virtual Lab Simulator. The ChemCollective is an award winning chemistry online resource. In addition to
Physical properties of Amino acids (a) Amino acids are colourless, crystalline substances comprising sweet taste. They melt along with decomposition at higher temperature (much
The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's co
Q. Reactions with metals? Ans. Halogens commonly undergo reactions with metals. Halogens react with the alkali metal family, Group IA in the periodic table. For example,
The difference among Threshold energy and average energy of the molecules is known as activation energy.
Thirty pounds of coal (analysis 80% C and 20% H ignoring the ash) are burned with 600 lbs of air (with a variable humidity), yielding a gas have an Orsat analysis in which the rati
Criteria of purity of organic compounds The purity of an organic compound can be determined by ascertaining its some physical constants such as m.p., b.p., defined gravity, re
The reaction A ? B + C is known to be zero order in A and to have a rate constant of 5.0 x 10-2 mol/L·s at 25 oC. An experiment was run at 25 oC where [A]0 = 1.0 x 10-3 M. a)
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