Strips of copper foil and magnesium were connected as seen below (the bulb lit up). These strips were cleaned with sandpaper before use. Give a reason why the strips were cleaned before use?

Q: Read the entire procedure and the recommended safety precautions. you think extra pieces of calcium…

A: Detail explanation of the above question is given below.

Q: How long would it take to plate out 28.3 g of copper from Cu2+ using 12.2 amps?   3520 minutes…

A: Charge= current *time Time= Charge/current  1 mole of cupped required 2 moles of electrons  1 mole…

Q: What will prevent iron from interfering with the aluminum measurements?

A: To prevent iron from interfering with the aluminum measurements, it is important to use a suitable…

Q: Which of the following statements is false?   a. Stainless steel contains chromium and nickel,…

A: There are different types of plating are used to protect the metal from the corrosion . Different…

Q: Albert Szent-Gyorgi, a pioneer in early photosynthesis research, stated, “What drives life is a…

A: Given:-             What drives life is a little electric current, kept up by the sunshine

Q: As an analyst, you were asked to determine the Ca content of the dolomite samples from Manila Bay…

A: Gravimetry analysis is a method of quantitative chemical analysis In this method  the species which…

Q: What distinguishes substances like salt and sugar from those found in e-waste like lead,mercury,…

A: Salt and sugar are substances that we use in our daily life. While lead,mercury, cadmium and arsenic…

Q: In the experiment of the cycle of copper reactions, discuss likely reasons for losing or not…

A: The law of conservation of mass was proposed by the scientist Antoine Lavoisier .The context of the…

Q: Write a brief summary of why the dissolved aluminum foil is filtered prior to adding sulfuric acid.

A: Aluminum foil is filtered before the addition of sulphuric acid. This process takes place during the…

Q: 1. Name the most abundant elements in the crust from No.1 to No.10. (O, Si, AI, Fe, Ca, Na K, Mg,…

A: Since you have posted question with multiple sub-parts, we will solve only first three sub-parts for…

Q: How are impurities separated from bauxite ore to get pure alumina?

A: To find: How are impurities separated form the bauxite ore to get pure alumina

Q: 2. This steel is used in railway wheels and tracks, gears, and crankshafts. * O High carbon steel O…

A:

Q: which metal Mg or Fe burned at the highest temperature? State the evidence that led to your…

A: Given : Different type of metals.  To find : which metal burns at high temperatures  Solution : As…

Q: 1. Write a short description about the physical and chemical properties of a copper at standard…

A:

Q: Match each statement in the left column of the table below with a compound on the right. In your…

A: In the given question properties of species are mentioned in column -1 while in column-II species…

Q: What are the types of supercapacitors available and how they are differentiated; explain with few…

A: The supercapacitor is called an ultracapacitor because it has a higher capacitance value than other…

Q: one of the following is not classified as native element a. diamond b. pyrite c. graphite d.…

A: The element which occurs in nature in uncombined form is known as the native element. Hence the…

Q: In one to two sentences, explain why metal is often used for making wire and the properties that…

A: Metals are a group of elements that are typically solid, shiny, and good conductors of heat and…

Q: How long would it take to plate out 28.3 g of copper from Cu2+ using 12.5 amps?   115 minutes…

A: Given : Mass of Cu to be plated out = 28.3 g Ions of Cu present in the solution are Cu2+ ions. And…

Q: Explain why diamonds are useful for electrodes in batteries

A: Diamonds are useful for electrodes in batteries due to the listed reason:

Q: . You found a weird ceramic material on the street and wonders if it might be ok to use in a medical…

A:

Q: Match each statement in the left column of the table below with a compound on the right. In your…

A: Different elements combined to form different compounds. These are compounds are held together by…

Q: Manganese Sulfate +   Aluminum Phospate

A: Given incomplete reaction is :  Manganese Sulfate +   Aluminum Phosphate ------------> ?…

Q: . electroplating means using electricity to coat one metal with another, to make it look better, or…

A: Electroplating is one of the applications of electrochemistry, where the coating of metal takes…

Q: 5. Which treatment is frequently used to protect aluminium articles from subsequent erosion? A.…

A: "Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: <p>Why is Ni not considered a common metal even though it composes over 2% of the total mass…

A: The reason for nickel cannot be considered as common metal is given in step two.

Q: Could we have used other materials instead of copper and zinc plates ? If so, list 2 other materials…

A: The question is asking if there are alternative materials that could be used in place of copper and…

Q: Copper on the left and zinc on the right. Write a description of the macroscopic observations you…

A: The question is based on the concept of electrochemistry. based on the given cell setup , we need to…

Q: Doubling a gas temperature from 100 K to 200 K causes a gas volume to double. Would you expect a…

A: Temperature in degree scale(oC) and kelvin scale(K) are related as following. Co+273.15=K

Q: B C Which part in the figure can be a grating or prism? A *中3中。 BC D * O O O O

A: Prism- An optical prism is a transparent optical element with flat, polished surfaces that are…

Q: Explain your choice, specifically describing the role of each metal in the redox process. A complete…

A:

Q: 14. Carbon is the link between the kiln gas and the lime. true or false

A: Carbon is the link between the kiln gas and the lime.

Q: Why does a gold-plated steel post might not offer the same protection as a 14K gold post?

A: Given information,      A gold-plated steel post might not offer the same protection as a 14K gold…

Q: Define the proper uses of the following laboratory glassware:   Define the proper uses of the…

A: In laboratory various types of equipments are used.Some important glasswares are pipette,volumetric…