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FAQ

When drawing the lewis structure for AlCl3 do you need one double bond to complete the octet on Aluminum? There are a total of 24 valence electronsso would one of the chlorines form a double bond with the aluminum?For some reason in my notes I have 3 single bonds leaving aluminum with only 6 electronsI can't figure out why.

I would say leave it with the three single bondsMost element don't actually conform to the octect ruleDouble bonds will introduce formal charges which isn't something that you want.

Assume that one aluminum can is completely reacted with oxygen to produce aluminum oxide, and that this energy can be completely converted to electrical energyHow long could this energy keep a 60 Watt light bulb burning?Al 26.98 g/moleO 16 g/moledelta Hf (Al2O3) 1670 kJ/moeone can 14g1 watt 1 J/secany help would be greatly appreciated!

find moles: one can is 14 grams Al 26.98 g/mol 0.5189 moles of Al the reaction 2 Al 3O2 - 1 Al2O3 (s) is a formation reaction, whose dH -1670 kJ/mole find energy released: 0.5189 moles of Al 1670 kJ/mole 868.1 kJ released aka 868,100 Joules find watt-seconds: 868,100 Joules released 1 watt-sec / joule 868,100 watt-sec find seconds: 868,100 watt-sec 60 watt bulb 14,468 seconds find minutes: 14,468 seconds 60 sec / min 241 min find hours: 241 min 60 min / hour 4.02 hours your answers, rounded to 2 sig figs would be: 14,000 seconds 240 min 4.0 hours ( the 14 g can had only 2 sig figs)

So I'm a germaphobe and before work i always wrap my Galaxy S6 in saran wrap to keep it clean and stuff so i dont' have to always wash my hands when I want to use my phoneI work at a grocery store and somtimes i touch dirty money and i don't want to get it on my phone and stuffSo is it safe to use saran wrap? and are there other alternatives i can do so don't freak out about it?

That is about the same thing as seran wrap (plastic) and maybe even worse for heat dissipationProbably one of the cases that an above poster posted is your best bet, or just PurellI would also advise against looking tacky to others, which you would to the vast majority of peoplePurell and Germ-X, acceptable; An enclosed case, acceptable; Plastic bags and seran wrap fit well with aluminum foil psychiatric patients.

Are aluminum baking sheets ok to be put in dishwasher? All mine have faded after several diswashing cycles!?

Ernest Hemingway's The Old Man and the Sea Tim O'Brien's The Things They Carried William Styron's The Long March (author of Sophie's Choice, in case you don't know who he is.) The Legend of the Falls was actually a novella by Jim HarrisonHarrison's got a few short novels outForgot to add Larry McMurtry's The Last Picture Show.

Wax paper or aluminum foil?SorryWrapper.

How Does A Backhoe Work

a) calcium (Ca)b) fluorine (F)c) aluminum (Al)d) oxygen (0)

I think I know these answersAtoms gain or lose electrons to form a full outer shell, and this is why some elements are less reactive and some are more reactiveCalcium- Loses 2 electrons and becomes Ca+2 Fluorine- Gains one electron and becomes F-1 Aluminium- lose 3 to become Al-3 Oxygen- would gain 2 to become O-2 Now I'm quite sure about these, fluorine in particular is a prime exampleI know these because all atoms have the outer shell structure 2.8.8 of electrons, so say fluorine has 9 electrons, it's atomic structure is 2.7, and it has to gain 1 electron to achieve a full outer shellIt wouldn't lose 7- that would take a lot of energy- and with less outer shells the electrons are closer to the nucleus, meaning there are strong forces between electrons and the atom nucleus, so it can easily gain an electron tooThis is what makes it reactive.The others would follow the same rule- the closest way to getting a full outer shell.

Which of the following would not have the same number of valence electrons as the others?boronaluminumgalliumselenium

selenium is in a different column, so different number of valence electrons

Would you be able to set a thin aluminum bar in a regular fire place, leave it for a while and then hammer it into shape?What could I add to the fire to increase the temp?

Yes, but you would need an ample air source to feed the combustion process of the forge. Aluminum melts at about 1200-1400 hundred degrees Farenheit, most pot metals will melt at around 750 -900 degrees. In the olden days you saw blacksmiths pumping a Bellows to provide the combustion air because they needed to get the metal Red hot so as to work and stretch the metal. Aluminum with its high melting point required constant heating and air being applied to get it to that required heat for working the metal. In your case an air compressor supplying a high level of air mixed with oxygen would be the only way you could do this unless you had a high temperature metal forge unit. The air bellows pump is built into the forge.