Sparkery
  • Member for 7 years, 5 months
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What does Pb(NO₃)₂ + KI form?
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5 votes

This is just a metathesis (double replacement) reaction. We know that nitrates are soluble, and alkali metals are soluble (at least in these general cases). Let's ignore balancing for now, and do ...

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Why does the freezing point of a sample gas occur at a certain temperature?
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5 votes

The first thing is that it has to be going from liquid to solid because the substance is being cooled. Like tap water put in the freezer: liquid to solid. On that note, the average kinetic energy ...

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How would you find the mass in grams, if you only know the number of particles of a portion of the formula?
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4 votes

The formula $\ce{Fe2(SO4)3}$ tells us that 3 molecules of $\ce{SO4^{2-}}$ exist for every $\ce{Fe2(SO4)3}$ molecule. $\frac{\ce{1 Fe2(SO4)3 molecule}}{\ce{3 SO4^{2-} molecule}} * 3.59*10^{23} \ce{SO4^...

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Write a Net Ionic Equation to Represent the Reaction of Aqueous Ammonia with Propionic acid
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3 votes

We know that ammonia is $\ce{NH3}$ and propanoic acid is $\ce{CH3CH2COOH}$. Ammonia is a basic substance, and propanoic acid is... an acidic substance. More specifically, ammonia fits the definition ...

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Making Ferric Chloride using HCl and Ferrum
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2 votes

You can find a glass beaker somewhere and simply drop in iron and diluted HCl. That's enough to make $\ce{FeCl2}$. $\ce{Fe + 2HCl -> FeCl2 + H2}$ That forms hydrogen gas, which is very flammable, ...

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How do I calculate the mass percent in the original mixture?
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2 votes

Looks close. Your math looks sound, but the reasoning is messy. $\ce{O2}$ is the only oxygen here. $$\ce{2KClO3 -> 2KCl + 3O2}$$ You might have skipped writing out that reaction — it helps a lot. ...

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Nomenclature of Organic Compound from Condensed Formula
2 votes

Are you looking for this? 1,4-dibenzylbenzene http://www.chemspider.com/Chemical-Structure.205991.html?rid=80e8a67d-0782-4794-bf27-db26ccd1ce39&page_num=0 What I did was go to their Structure ...

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NaCl dissociation not spontaneous?
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2 votes

You might be confusing $\ce{\Delta G}$ and $\ce{\Delta H}$. $$\ce{\Delta G = \Delta H - T \Delta S}$$ $\ce{\Delta G}$, free energy, measures the "usefulness" of a system. If $\ce{\Delta G \gt 0}$, ...

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Solution , Solubility and Colligative Property?
1 votes

Let's say we have some ice. Beautiful structure. Ice stays solid at some temperatures because of its neat, tight lattice. Ice stacks this over and over until there's no more ice left to stack. If I ...

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Limiting reactant and percent yield
1 votes

The first step is to figure out a reaction equation. [I'm assuming elemental] sodium reacts with water violently because it releases a lot of energy when its only valence electron gets ripped apart. ...

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Stoichiometry of Gaseous Reactions
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0 votes

I never really learned the method of solving this stuff with Avogadro's Law, but here's an almost identical way. Your balanced equation is as follows... $\ce{2H2S + 3O2 -> 2SO2 + 2H2O}$, and I ...

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