![]() ![]() These questions require a bit more knowledge: " If 500 grams of Fe reacts with ample Oxygen according to the following equation: 4Fe + 3O2 = 2Fe2O3 A) How many grams of rust are produced? B) How many grams of Oxygen are needed?" => " how much Fe2O3 from 500 grams Fe" " What is the amount of substance of hydrogen atoms in 0,50g methane (CH4) and why?" => " how much hydrogen in 0.50 grams of methane" How much energy does one photon of this light carry?" => " convert 485 nm wavelength to joules" " the blue color in some fireworks occurs when copper (I) chloride is heated to 1500K and emits a blue light of wavelength 4.50*10^2nm. " A 10% kcl solution in water has a density of 1.06/ml'calculate its malarity and malality?" => " convert 10 % KCl to malality" " What is the number of mmoles solute in 2 liters of 0.0555 M KMnO?" => " convert 2 liters of 0.0555 M KMnO to mmoles" " Calculate the empirical formula of a molecule with the following percent compositions: 59.7% lithium (Li) and 40.3% nitrogen." => " 59.7% lithium and 40.3% nitrogen" Draw Lewis dot structures for each species.?" => " lewis structure of CO2" Balance the equation.?" => " Na2CO3+Pt(ClO3)2 -> NaClO3 + PtCO3" " How many grams of NaOH are in 250 mL of a 3.0 M NaOH solution?" => " convert 250 mL 3.0 M NaOH to grams" " Calculate the number of moles of Al2O3 produced from 27.6 moles of O2" => " convert 27.6 moles O2 to Al2O3" " How many grams of sulfur (S) are needed to react completely with 246 g of mercury (Hg) to form mercuric sulfid?" which can be answered by typing the following into WA: " convert 246 g Hg to mercuric sulfid" (which also fixes the spelling). one simply reformulates the question, types it in to WA and gets the answer. Most of these questions can be answered in two steps using WA and many can be answered in one step, i.e. All but 3 of the answers involve Wolfram|Alpha (WA) so this is what I'll focus on here. Here you can see my contributions for Reddit and Yahoo Answers, but I'll focus on the Yahoo Answers.Īs I am writing this I have supplied 21 answers on Yahoo Answers and 11 answers on Reddit (plus 1 in the mathhelp page). I subsequently expanded the experiment to include Yahoo Answers chemistry page. As part of the post I started a little experiment where I see how many problems posted on Reddit's Chemhelp page I could solve using such calculators. Update 2014.01.20: This video really inspired this post and nicely addresses many of the objections one might raise.Ībout two weeks ago I wrote a blogpost wondering to what extent many chemistry homework problems are rendered trivial by chemical calculators.
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