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# Questions tagged [homework]

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### Relation between number of equivalents of reactants

Consider the reaction $\ce{Sb2S3 + F2 -> SbF5 + SF6}$. If the milliequivalents of antimony, sulfur and fluorine are x, y and z respectively, then prove that $x+y=z$. This is what I know: Number of ...
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### Gas Law problems with stoichiometry

Consider the following reaction : $\ce{H2 + Cl2 -> 2HCl}$ A) If you have 15.00 liters of hydrogen reacting with 10.00 liters of chlorine at STP, how many liters of HCl would you produce? B) What ...
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### How to calculate molality, molarity and mole fraction given density (g/mole)?

Calculate the molality, molarity and mole fraction of a $\ce{CuSO4}$ in a 17% m/m aqueous solution (density of the solution is 1.367 g/mole) I did .17 * 1.367 to find grams of $\ce{CuSO4}$ and .83 * ...
So, I was doing my homework and had to write out the complete equation and net ionic equation for a combination of Lead (II) Iodate and Sodium Hydroxide. So my equation is given as: $\ce{Pb(IO3)2_{(... 0 votes 2 answers 3k views ### How will citric acid be deprotonated by pyridine? Why do we deprotonate that specific hydrogen as opposed to any other one? What information does the table on the right give us? It seems unrelated to citric acid - where does the fluorine come from? 0 votes 2 answers 5k views ### Predicting electronic geometry, observable geometry, and hybridization for any atom in a molecule Can someone please explain the intuition around the answers to this problem: I'm finding it very confusing because it seems like you have to nitpick between two resonance structures to get the ... 0 votes 1 answer 867 views ### Law of Definite Proportion: Do the numbers indicating moles count? I need to find the ratio of a substance as it converts from a bicarbonate to a carbonate: ex:$\ce{Fe(HCO3)2 -> FeCO3 + CO2 + H2O}\ce{Fe(HCO3)2} / \ce{FeCO3}$=$3/2$*using molar masses But ... -1 votes 2 answers 353 views ### How does pressure shift equlibrium Here is a question from my practice problems: I know that the answer is A, but I don't know why. Is it because A has the most moles of gas on the left? thanks 0 votes 2 answers 2k views ### What is the multiplicity of this signal in the ¹H NMR of glutamine in D₂O The 2 Hydrogens near the carbonyl (the lower 2$\ce{H}$s are not bonded to the nitrogen) should be the most deshielded so I think they appear as the rightmost peak in the NMR. Are these 2$\ce{H}$s a ... 0 votes 1 answer 380 views ### Is 2,3-dimethylprop-1-ene a possible organic structure? Is 2,3-dimethylprop-1-ene a possible organic structure? I am not sure how to approach this, what would the correct name of this molecule be? 0 votes 2 answers 8k views ### List in order of increasing radius List in order of increasing radius: a) Rb, K, C5, Kr For this one I got C, Kr, K, Rb b) Ar, Cs, Si, Al This I got: Ar, Si, Al, Cs Does anyone know if this is correct? I don't have the solution ... 0 votes 1 answer 3k views ### Specific heat capacity and the periodic table Can someone explain me how can I use the periodic table in order to find the specific heat capacities of some elements? (for example, of Aluminium ) The question I have encountered is as follows: ... 0 votes 1 answer 577 views ### Product/(s) of the following reaction I was wondering what the product will be in the following reaction: $$\ce{H3COOCH3 ->[\ce{H+}]} \:?$$ I was thinking about$\ce{CH3COOH}\$ being a product but I do not know the mechanism. 