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Explain why treating a mixture of vanillin and eugenol to steam distillation would result in distillation of eugenol only?
The solution density if 1.001g/mL. Calculate the Ca2+ and Mg2+, molarity, molality, mol fraction, and the PPM. Please show examples.
A 100 mL of a 0.100 M solution of vinegar (acetic acid, CH3COOH) is mixed with 100 mL of a 0.100 M baking soda (sodium bicarbonate) solution and a reaction proceeds that generates carbon dioxide, water and sodium acetate.
In which of the following complexes are geometric isomers possible, [Co(H2O)4Cl2]+, [Co(NH3)3F3], [Pt(NH3)Br3]-, [Co(en)2(NH3)Cl]2+, if isomers are possible draw their structures and label them as cis or trans
If you prepare a liter of 0.02 M acetic acid and 0.01 M sodium acetate, what will be the pH if the pKa of acetic acid is 4.76? b) If you add 1 ml of 5 M NaOH to the 1 liter above, what will be the new pH and the change in pH?
Calculate the Pickering series wavelength associated with the excited state ni = 9.What region of the electromagnetic spectrum does this transition fall in?
when 0.050 mol of propionic acid c2h5co2h is dissolved in 300 ml of water the equilibrium concentration of h3o ions is
A chemical reaction is found to have an activation energy (Ea = 15 kJ/mol). At a temperature of 505 K, what fraction of collisions have enough energy to exceed the activation energy
Na3P + 3H2O ---> PH3 + 3NaOH. What is the theoretical yield of PH3 when 150 grams of Na3P is mixed with 250 grams of H2O? If the actual yield is 30 grams, what is the % yield?
Add charges, single electron dots, and/or pairs of dots as appropriate to show the Lewis symbols for the most stable ion of each element. Treat as the valence shell in all cases. To add formal charges, click the button below (which will turn yello..
the burning of ethane produces both co2 and h2o. if 200 ml of co2 is produced at 20degc and 750 torr what volume of
If 12.5 g of CCl3F is enclosed in a 1.1 -,L container, will any liquid be present? What is the mass of the liquid?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.190 M HClO(aq) with 0.190 M KOH(aq). The ionization constant for HClO can be found here.
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