irst Statement: High carbon steel is used to make tools such as saw lades, hammers and chisels. Second Statement: Aluminium is strong and arely alloyed. * First statement is incorrect and second statement is correct Both statements are correct O Both statements are incorrect O First statement is correct and second statement is incorrect

irst Statement: High carbon steel is used to make tools such as saw lades, hammers and chisels. Second Statement: Aluminium is strong and arely alloyed. * First statement is incorrect and second statement is correct Both statements are correct O Both statements are incorrect O First statement is correct and second statement is incorrect

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Write any four applications of Aluminum Alloys
Solve all put true or false, then correct the error:- 1. Mn can be extracted by pyro-metallurgical process. 2. Bauxite is the main ore of Mg. 3. The symbol of Magnatite is Fe₂O4. 4. Pig iron have high carbon content. 5. Examples of frothers is pine oil. 6. Pulverizing means increase the particle size. 7. Comminution Methods divided into two parts. 8. High Grade Ore have high impureties. 9. Au found as compined state. 10.Recycling metals used to reduces air pollution.
Determine the corrosion rate ( mpy ) of steel corresponding to 1µA / cm? of current. Following is the composition of alloys. Cr = 21%, density = 7.1 g/ cm', At.wt. = 52.01 g /mol, number of electron = 1 Ni = 8%, density = 8.9 g/ cm', At.wt. = 58.68 g /mol, number of electron = 2 Fe = 70%, density = 7.86 g/ cm', At.wt. = 55.85 g /mol, number of electron = 2 Note : Faradays constant = 96500 coulombs per mole of electrons. C= constant which includes F and any other conversion factor for unites, for instance, C = 0.129 when corrosion rate is in mpy.
Why are resistors important in an electrical circuit? ) Resistors only allow a current to flow in one direction and can change alternating currents to direct currents. Resistors are electrical components that help to control the flow of the current in a circuit; they restrict the flow of electrons. ) Resistors consist of two pieces of conducting material separated by an insulating material called a dielectric. They are often used as timing devices, but they can transform electrical currents in other ways, too. ) Resistors can switch tiny electric currents on and off or amplify them.
Why does a gold-plated steel post might not offer the same protection as a 14K gold post?
Explain about passivation in metals
1. Generate a spreadsheet that allows the user to convert the concentration of one element of a two-element metal alloy from weight percent to atom percent. 2. Using the spreadsheet in (1.), calculate the atoms per cubic centimeter of metal alloy (N). Given Data: Weight percent metal (A): 45 % Density (A) Atomic weight (A) Weight percent metal (B): 55 % Density (B) Atomic weight (B) : 8.7 g/cm³ : 23.26 g/mol : 4.5 g/cm³ : 53.12 g/mol
A steel model was cooled down from 1000°C. a. Find the composition of the steel, if, at 800°C the model contains austenite and ferrite at a ratio of 1:3. b. Calculate the relative amounts of cementite and ferrite at room temperature (X-95.6%).
Aluminum is the most abundant metal in the earth’s crust. It is also a common household utensilmetal. The extraction of Aluminum from its ore is expensive because the metallurgy uses a veryhigh amount of electricity. The extraction of Aluminum metal takes place in a number of steps,which may be summarized below.Step 1: Washing and mechanical processes employed to the ore to remove basic impurities.Step 2: Conversion of Aluminum ore (Bauxite) to powdered Alumina (Al2O3) by reaction withconcentrated NaOH solution.Step 3: Dissolving Alumina in molten Cryolite(Na3AlF6)Step 4: Electrolytic refining of the solution at step 2. (Diagram below) to form pure Aluminummetal.Step 5: Collecting pure molten Aluminum at the cathode, which change later to solid Aluminummetal.As you observed, many changes are taking place in different steps for the above extractionprocess. Classify them as physical or chemical change and explain why?a) Step 1 __________________________________________b) Step 2…
Which of the following answer choices is an alloy? A) titanium B) zinc C) copper D) brass
please solve asap
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