Chemistry, 22.04.2020 01:52 tamyrareaves12

.For a solder containing 70%Pb 30%Sn determine: a. If the alloy is hypo- or hypereutectic b. the composition of the first solid to form during solidification c. the amount and composition of each phase at 1840 C d. the amount and composition of each phase at 1820 C e. the amount and composition of each phase at 500 C f. the eutectic composition and temperature ( 35 points)

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Answer from: elizediax8683

Question in proper order:

Consider a solder containing 70%Pb 30%Sn, determine:

a. If the alloy is hypo- or hypereutectic

b. the composition of the first solid to form during solidification

c. the amount and composition of each phase at 1840 C

d. the amount and composition of each phase at 1820 C

e. the amount and composition of each phase at 500 C f. the eutectic composition and temperature ( 35 points)

Answer and explanation:

The Phase Diagram of Pb-Sn Alloy is given in the attached image

a. Pb-Sn alloy will have eutectic composition between 61.9% and 97.5% Sn, so the Pb-70%Sn alloy will have eutectic composition as it has 70%Sn

.For a solder containing 70%Pb 30%Sn determine: a. If the alloy is hypo- or hypereutectic b. the com

Answer from: Quest

може ли да зареждате повече информация, моля

Answer from: Quest

balanced chemical equations follow the law of conservation of mass and charges. the masses and charges on either sides of the equation should be balanced.in conservation of mass, the number of atoms of each element on left side should be equal to the number of atoms of each element on the right side of the equation.1)k₂so₄ + 2ca(no₃)₂ --> 2kno₃ + 2caso₄number of ions left side right side k⁺ 2 2so₄²⁻ 1 2ca²⁺ 2 2no₃⁻ 4 2in this equation the masses of so₄²⁻ and no₃ are not balanced. therefore this equation violates the law of conservation of mass2)ti + 2 cl₂ > ticl₄ left side right side ti 1 1cl 4 4this equation follows the law of conservation of mass3)2c₂h₂ + 5o₂ > 4co₂ + 2h₂o left side right side c 4 4h 4 4o 10 10this equation follows the law of conservation of mass4)baso₄ + 2naoh --> ba(oh)₂ + na₂so₄ left side right side ba 1 1so₄²⁻ 1 1na 2 2 oh⁻ 2 2this equation follows the law of conservation of massanswer is 1st equation

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.For a solder containing 70%Pb 30%Sn determine: a. If the alloy is hypo- or hypereutectic b. the com...

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