Electroplating of metals - Study guides, Class notes & Summaries

What are the 8 uses of electrolysis? - correct answer Purification of metals Electroplating Chlorine production Extraction of Hydrogen from water Extraction of oxygen from water Extraction of Reactive metals Hair removal Production of sodium hydroxide What is Electrolysis? - correct answer The passing of an electric current through an molten ionic compound causing a chemical change resulting in a change in the elements that make up the compound. What is an Electrolyte? - correct ans...

138 TOP Machine Design - Mechanical Engineering Multiple choice Questions and Answers Latest Machine Design Questions and Answers pdf free download 1. The ultimate strength of steel in tension in comparison to shear is in the ratio of (a) 1 : l (b) 2:1 (c) 3 : 2 (d) 2 : 3 (e) 1 : 2 Ans: c 2. The permissible stress for carbon steel under static loading is generally taken as (a) kg/pm2 (b) kg/cm2 (c) kg/cm2 (d) 7500-10,000 kg/cm2 (e) 10,000-15,000 kg/cm2. Ans: c 3. The proper...

electrochemistry - correct answer study of relationship between chemical reactions and movement of electrons or ions 3 areas of focus in electrochemistry - correct answer 1. chemical reactions that produce a current 2. chemical reactions that need a current to occur ex. electroplating 3. controlling reactions that are spontaneous but undesirable (ex. corrosion) during an electrochemical reaction -...

Science Bowl Chemistry Questions With Verified And Updated Answers The ideal fuel for fuel cell use is: A. compressed natural gas B. reformulated gasoline C. hydrogen D. methanol - answerAnswer: HYDROGEN Out of the following choices, which is the correct name for N2O3: A. dinitrogen oxide B. dinitrogen dioxide C. dinitrogen trioxide D. dinitrogen tetroxide - answerAnswer: DINITROGEN TRIOXIDE Which of the following is an example of a buffer system: A. H2CO3 and water B. H2CO3 and NaHCO3 C...

Wastewater Exam Questions With 100% Correct Answers water becomes denser as it becomes - answercolder chemical symbol for lead - answerPb Elements that are isotopes contain different numbers of ______________ - answerneutrons table salt is - answersodium chloride Water has a much higher boiling point than expected because of - answerhydrogen bonding Chemical bonds occur when atoms share___________ - answerelectrons The number of electrons in an atom's outermost electron layer determine ...

Properties of Acids and Bases Assignment and BasesConsider this reaction: KOH + HBR -> KBR + H2O Which is the acid in this reaction? - correct answer HBr Consider this reaction: KOH + HBR -> KBR + H2O Which is the base in this reaction? - correct answer KOH Consider this reaction: KOH + HBR -> KBR + H2O Which statement is most likely true about KOH? - correct answer It turns clear phenolphthalein pink. Consider this reaction: KOH + HBR -> KBR + H2O Which statement ...

Electrolysis Test Study Guide latest updated What are the 8 uses of electrolysis? - ️️ Purification of metals Electroplating Chlorine production Extraction of Hydrogen from water Extraction of oxygen from water Extraction of Reactive metals Hair removal Production of sodium hydroxide What is Electrolysis? - ️️ The passing of an electric current through an molten ionic compound causing a chemical change resulting in a change in the elements that make up the compound. What is a...

Double-displacement reaction - answer-is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. Precipitate - answer-is an insoluble solid that emerges from a liquid solution. The emergence of the insoluble solid from solution is called precipitation. Often the precipitate emerges as a suspension. (precipitates can form when two soluble salts react in solution to form one or more insoluble products) Energy levels - answer-(also ...

1. If the roof and ceiling assembly of a structure has a factor of thermal conductance (U-factor) of 0.04, what should be the R-value of the insulation used in this same assembly? A. 2.5 B. 10 c. 25 D. 40 1. C. The answer is 25. The U-factor is the thermal conductance of one square foot of an entire assembly. The reciprocal of U is R, which is the thermal resistance of the same square foot of construction. A U-factor of 0.04, therefore, corresponds to an R-value of 1/0.04 = 25 (choice C). ...

Electrochemistry is a branch of chemistry which deals with inter-conversion of chemical energies and electrical energy. We’ll discuss electrolytic reactions (reactions that occur when electricity passes through solutions) as well as electromagnetic reaction (reactions that produce electric energy). Some examples of electrolytic reactions are electrolysis, electroplating, electro refining of metals, etc. Some examples of electro genetic reactions are reactions occurring in cells or batteries.