Chemistry

hey just got some redox related questions lead acid storage battery consists of plates of spongy metallic lead and plates of spongy lead dioxide immersed in a solution of sulfuric acid. As the battery discharges the metallic lead and lead dioxide are converted to lead sulfate. write the balance equation for each half reaction in battery: oxidation : Reduction: write balanced chem equation for overall redox reaction equation: balance this reaction in acid solution or base? how many electrons were transferred in the reaction? analyze a lead acid storage battery /identify the anode : cathode: salt bridge: calculate the voltage of the cell? …

Can you predict the physical properties of a chemical by its chemical formula? For example: H2O Just by looking at the periodic table, you can tell what the 3d electron structure is, you can tell its molecular mass, ect. But, my question is, is it possible to predict what its density will be? (at room temperature and standard pressure). Or what color it would be? Or whether it would be a liquid, solid, or gas? ect? Thanks

According to Carl Sagan's "heaven and hell" documentary, Venus has clouds made of concentrated sulfuric acid. Wouldn't that react with the metal in the spacecrafts they used for exploring Venus?

1) Cholesterol is an organic molecule that occurs in the blood stream. What type of compound is cholesterol? A) an acid B) an alcohol C) an alkane D) an alkene I guessed A because cholesterol comes from fats which are fatty acids. But the answer is B Why is that? 2) A compound known in industry as "MTBE" is used as an additive in lead-free petrol. The structural formula of MTBE is shown. Why isn't this the answer? P/S: I know this belongs in the Organic Chemistry sub-forum, but it's really dead in there and I hope to get my answers ASAP :-)

I understand that cracking is defined as the breaking down of large hydrocarbons into smaller ones, whereas dehydrogenation is the removal of hydrogen atoms If propane were to be broken down into propene (C2H6 to C2H4), is that cracking or dehydrogenation, or both? And I have a question that asks about cracking, in the diagram it shows liquid alkane on mineral fiber heated in a test tube with aluminum oxide. May I ask what is the aluminum oxide used for?

I have to measure the protein content in Alum hydroxide vaccines. The active substance of these vaccines are proteins in a low concentracion andabsorbed to alum hydroxide. Could anybody help me indicating the methodology and the equipment to use?

mine tailings contain many other minerals, such as Al(OH3) PbCO3, CoCO3 and ZnCO3 will the oxidation of pyrite affect any of these metals? why/why not?

first of you would be aware that scientist were able to cloak a single gold atom.. would this be considered chemistry? but anyways could someone explain to me the basics? how things work how they relate to each other? the concept seems hard to put together.. never heard of metacrysis before.. light bending all over the place.. wave lengths.. ugh please help explain this more in depth for me ( but simplistic/easy to understand) thanks thanks

We discussed the chemistry of the famous trophy (gold, malachite) and conclude it is most likely empty inside... A hollow victory perhaps?

Hi. Is it possible to determine weather an ionic compound is soluble or insoluble in water using the formula [imath]\frac{1}{4\pi\epsilon} \frac{q_1q_2}{r^2}[/imath] ?

Hi, I'm new here and I had a question in my mind hoping those chemistry and other related fields scientists or forumers help me to answer. My question is as follows: What is the best method / technique to extract compounds from plant sample using aqueous solvent? other than using soxhlet extraction or boiling in deionised water, any other best and suitable method / technique for aqueous extraction?

This if for a science fiction novel I'm writing. I'm not much of a science nerd but I really want to get the science right so I'm probably going to ask a lot more dumb questions around here. So my question is, If you freeze oxygen to a solid state and pressurize it to say red oxygen how much could you reduce it's volume? Do you think you could store more oxygen in a smaller space if you used some sort of chemical oxygen generator instead? like an 'oxygen candle'? What method would most likely be used for personal breathing devices in the distant future? On one hand the oxygen candles require extremely hot exothermic reactions, but solid oxygen requires high pressu…

A lot of reactions are simple to predict; the acid-base reaction and the single and double replacement reaction that can be predicted by looking at the activity series. My question was how do you predict an reaction that has to do with nonmetal. For example, how do you know if H2O will react with NO2? Hydrogen is on the activity series but Nitrogen is not since it is a nonmetal. Please do help

how can you dry KNO3 when it has become damp

Hi I need someone to explain to me what I have done because I confused my self. - I have a metal complex with 12.77% Fe in it - I wanted 50 ppm concentration of it: (50 mg/L)/0.1277=391.5 mg/L - I analysed it with AAS and it gave me a conc. of 39.2 mg/L - What does this mean? Should my AAS reading have been close to 391.5 like I calculated it? I don't understand my results at all. Maybe my procedure was wrong? PLEASE HELP

hey guys, i'm learning about hybridisation at the moment but theres just something im confused about. If im given a lewis diagram of a molecule, i can easily tell where the sigma bonds are (coz they're just between the atoms) but how can i tell where the pi bonds are (coz from what i know, they;re meant to be at different orientations or something). there's got to be a way of just easily seeing how many pi bonds there are and where they are isn't there? can anyone help me plz?

how do i calculate the pH of .100 M Propanoate (CH3CH2COOH)

hi i was just wondering how is it so that without any mentioned calculations did my chemistry book have the structure of methane with labelled bond angle? can any 1 tell me how to calculate bond angles? is there any formula to calculate it. help me please. thnx

I was using a .45uM filter on a solution, and while water could pass through it quite easily, air does not pass through at all. If you try to pass air through the filter it is impossible. So, does that mean that water is smaller than all the molecules in air, or is it something else? I would have thought something like O2 would be smaller than H20.

I am doing a synthesis of aspirin, from salicylic acid and acetic anhydride, to form acetylsalicylic acid, and I was wondering if there was any way to substitute the Acetic Anhydride required in the reaction for something else, as I do not have any available to me. The reaction is as follows: C7H6O3 + C4H6O3 (Acetic Anhydride) --> C9H8O4 (Aspirin) + C2H4O2 (Acetic Acid)

so boric acid will make borates but you can also precipitate tetraborates with borax what the difference?

I learned on this forum that if one wants to neutralize bleach one can add hydrogen peroxide. Useful if one wants to clean up after a bleach spill or clear a washing machine in a laundromat with oxyclean before putting their clothes in. The post said that one gets salt, water, and oxygen. My question, is this an endothermic, exothermic, or neutral reaction. Would it be safe to rinse ones hands in H2O2 after using NaOCl, or is one risking harm?

I'm having trouble understanding why anti-orbitals form. For example: s (H) + s (H) -> σ (H2) Then the anti-orbitals in He2 (Theoretically) s^2 (He) + s^2 (He) -> σ + σ* (He2)

molecules move al the time in solids, gasses, etc. . . . but seeing as they move could you not make them move at the speed of light